diff --git a/app/assets/javascripts/app/controllers/layout_ref.js.coffee b/app/assets/javascripts/app/controllers/layout_ref.js.coffee
index acbd2d8f2..61aadbc29 100644
--- a/app/assets/javascripts/app/controllers/layout_ref.js.coffee
+++ b/app/assets/javascripts/app/controllers/layout_ref.js.coffee
@@ -11,9 +11,9 @@ App.Config.set( 'layout_ref', Index, 'Routes' )
 
 class Content extends App.ControllerContent
   events:
-    'hide.bs.dropdown .js-recipientDropdown': 'hideOrganisationMembers'
-    'click .js-organisation':                 'showOrganisationMembers'
-    'click .js-back':                         'hideOrganisationMembers'
+    'hide.bs.dropdown .js-recipientDropdown': 'hideOrganizationMembers'
+    'click .js-organization':                 'showOrganizationMembers'
+    'click .js-back':                         'hideOrganizationMembers'
 
   constructor: ->
     super
@@ -46,21 +46,21 @@ class Content extends App.ControllerContent
   render: ->
     @html App.view('layout_ref/content')()
 
-  showOrganisationMembers: (e) =>
+  showOrganizationMembers: (e) =>
     e.stopPropagation()
 
     listEntry = $(e.currentTarget)
-    organisationId = listEntry.data('organisation-id')
+    organizationId = listEntry.data('organization-id')
 
     @recipientList = @$('.recipientList')
-    @organisationList = @$("##{ organisationId }")
+    @organizationList = @$("##{ organizationId }")
 
-    # move organisation-list to the right and slide it in
+    # move organization-list to the right and slide it in
 
-    $.Velocity.hook(@organisationList, 'translateX', '100%')
-    @organisationList.removeClass('hide')
+    $.Velocity.hook(@organizationList, 'translateX', '100%')
+    @organizationList.removeClass('hide')
 
-    @organisationList.velocity
+    @organizationList.velocity
       properties:
         translateX: 0
       options:
@@ -73,12 +73,12 @@ class Content extends App.ControllerContent
         translateX: '-100%'
       options:
         speed: 300
-        complete: => @recipientList.height(@organisationList.height())
+        complete: => @recipientList.height(@organizationList.height())
 
-  hideOrganisationMembers: (e) =>
+  hideOrganizationMembers: (e) =>
     e && e.stopPropagation()
 
-    return if !@organisationList
+    return if !@organizationList
 
     # fade list back in
 
@@ -92,13 +92,13 @@ class Content extends App.ControllerContent
 
     @recipientList.height('')
 
-    # slide out organisation-list and hide it
-    @organisationList.velocity
+    # slide out organization-list and hide it
+    @organizationList.velocity
       properties:
         translateX: '100%'
       options:
         speed: 300
-        complete: => @organisationList.addClass('hide')
+        complete: => @organizationList.addClass('hide')
 
 App.Config.set( 'layout_ref/content', Content, 'Routes' )
 
diff --git a/app/assets/javascripts/app/controllers/navigation.js.coffee b/app/assets/javascripts/app/controllers/navigation.js.coffee
index f0af2b19c..0d888dce8 100644
--- a/app/assets/javascripts/app/controllers/navigation.js.coffee
+++ b/app/assets/javascripts/app/controllers/navigation.js.coffee
@@ -173,9 +173,9 @@ class App.Navigation extends App.Controller
                 data =
                   display:    "#{organization.displayName()}"
                   id:         organization.id
-                  class:      "organisation organization-popover"
+                  class:      "organization organization-popover"
                   url:        organization.uiUrl()
-                  iconClass:  "organisation"
+                  iconClass:  "organization"
                 area.result.push data
 
           @renderResult(result)
diff --git a/app/assets/javascripts/app/controllers/ticket_customer.js.coffee b/app/assets/javascripts/app/controllers/ticket_customer.js.coffee
index 45ae81ecb..1856adb2b 100644
--- a/app/assets/javascripts/app/controllers/ticket_customer.js.coffee
+++ b/app/assets/javascripts/app/controllers/ticket_customer.js.coffee
@@ -8,7 +8,7 @@ class App.TicketCustomer extends App.ControllerModal
     @button = true
 
     configure_attributes = [
-      { name: 'customer_id', display: 'Customer', tag: 'user_autocompletion', null: false, placeholder: 'Enter Person or Organisation/Company', minLengt: 2, disableCreateUser: true },
+      { name: 'customer_id', display: 'Customer', tag: 'user_autocompletion', null: false, placeholder: 'Enter Person or Organization/Company', minLengt: 2, disableCreateUser: true },
     ]
 
     controller = new App.ControllerForm(
diff --git a/app/assets/javascripts/app/controllers/ticket_zoom.js.coffee b/app/assets/javascripts/app/controllers/ticket_zoom.js.coffee
index e2c3ebe82..cf9d64a5b 100644
--- a/app/assets/javascripts/app/controllers/ticket_zoom.js.coffee
+++ b/app/assets/javascripts/app/controllers/ticket_zoom.js.coffee
@@ -907,7 +907,7 @@ class Edit extends App.Controller
     @setArticleType(@type)
 
     configure_attributes = [
-      { name: 'customer_id', display: 'Recipients', tag: 'user_autocompletion', null: false, placeholder: 'Enter Person or Organisation/Company', minLengt: 2, disableCreateUser: false },
+      { name: 'customer_id', display: 'Recipients', tag: 'user_autocompletion', null: false, placeholder: 'Enter Person or Organization/Company', minLengt: 2, disableCreateUser: false },
     ]
 
     controller = new App.ControllerForm(
diff --git a/app/assets/javascripts/app/lib/app_post/user_organization_autocompletion.js.coffee b/app/assets/javascripts/app/lib/app_post/user_organization_autocompletion.js.coffee
index 2a2f0fcc5..a5c9a98b7 100644
--- a/app/assets/javascripts/app/lib/app_post/user_organization_autocompletion.js.coffee
+++ b/app/assets/javascripts/app/lib/app_post/user_organization_autocompletion.js.coffee
@@ -1,9 +1,9 @@
 class App.UserOrganizationAutocompletion extends App.Controller
   className: 'dropdown js-recipientDropdown zIndex-2'
   events:
-    'hide.bs.dropdown .js-recipientDropdown': 'hideOrganisationMembers'
-    'click .js-organisation':                 'showOrganisationMembers'
-    'click .js-back':                         'hideOrganisationMembers'
+    'hide.bs.dropdown .js-recipientDropdown': 'hideOrganizationMembers'
+    'click .js-organization':                 'showOrganizationMembers'
+    'click .js-back':                         'hideOrganizationMembers'
     'click .js-user':                         'selectUser'
     'click .js-user-new':                     'newUser'
     'focus input':                            'open'
@@ -148,9 +148,9 @@ class App.UserOrganizationAutocompletion extends App.Controller
           e.preventDefault()
           userId = @$('.recipientList').find('li.is-active').data('user-id')
           if !userId
-            organisationId = @$('.recipientList').find('li.is-active').data('organisation-id')
-            if organisationId
-              @showOrganisationMembers(undefined, @$('.recipientList').find('li.is-active'))
+            organizationId = @$('.recipientList').find('li.is-active').data('organization-id')
+            if organizationId
+              @showOrganizationMembers(undefined, @$('.recipientList').find('li.is-active'))
               return
           if userId is 'new'
             @newUser()
@@ -217,24 +217,24 @@ class App.UserOrganizationAutocompletion extends App.Controller
 
   emptyResultList: =>
     @$('.recipientList').empty()
-    @$('.recipientList-organisationMembers').remove()
+    @$('.recipientList-organizationMembers').remove()
 
-  showOrganisationMembers: (e,listEntry) =>
+  showOrganizationMembers: (e,listEntry) =>
     if e
       e.stopPropagation()
       listEntry = $(e.currentTarget)
 
-    organisationId = listEntry.data('organisation-id')
+    organizationId = listEntry.data('organization-id')
 
     @recipientList = @$('.recipientList')
-    @organisationList = @$("##{ organisationId }")
+    @organizationList = @$("##{ organizationId }")
 
-    # move organisation-list to the right and slide it in
+    # move organization-list to the right and slide it in
 
-    $.Velocity.hook(@organisationList, 'translateX', '100%')
-    @organisationList.removeClass('hide')
+    $.Velocity.hook(@organizationList, 'translateX', '100%')
+    @organizationList.removeClass('hide')
 
-    @organisationList.velocity
+    @organizationList.velocity
       properties:
         translateX: 0
       options:
@@ -246,12 +246,12 @@ class App.UserOrganizationAutocompletion extends App.Controller
         translateX: '-100%'
       options:
         speed: 300
-        complete: => @recipientList.height(@organisationList.height())
+        complete: => @recipientList.height(@organizationList.height())
 
-  hideOrganisationMembers: (e) =>
+  hideOrganizationMembers: (e) =>
     e && e.stopPropagation()
 
-    return if !@organisationList
+    return if !@organizationList
 
     # fade list back in
     @recipientList.velocity
@@ -264,13 +264,13 @@ class App.UserOrganizationAutocompletion extends App.Controller
 
     @recipientList.height('')
 
-    # slide out organisation-list and hide it
-    @organisationList.velocity
+    # slide out organization-list and hide it
+    @organizationList.velocity
       properties:
         translateX: '100%'
       options:
         speed: 300
-        complete: => @organisationList.addClass('hide')
+        complete: => @organizationList.addClass('hide')
 
   newUser: (e) =>
     if e
diff --git a/app/assets/javascripts/app/models/organization.js.coffee b/app/assets/javascripts/app/models/organization.js.coffee
index 64316e141..9b6761673 100644
--- a/app/assets/javascripts/app/models/organization.js.coffee
+++ b/app/assets/javascripts/app/models/organization.js.coffee
@@ -18,7 +18,7 @@ class App.Organization extends App.Model
     '#organization/profile/' + @id
 
   icon: (user) ->
-    "organisation icon"
+    "organization icon"
 
   @_fillUp: (data) ->
 
diff --git a/app/assets/javascripts/app/views/generic/user_search/item_organization.jst.eco b/app/assets/javascripts/app/views/generic/user_search/item_organization.jst.eco
index be1c06804..ff30cedfd 100644
--- a/app/assets/javascripts/app/views/generic/user_search/item_organization.jst.eco
+++ b/app/assets/javascripts/app/views/generic/user_search/item_organization.jst.eco
@@ -1,6 +1,6 @@
-<li class="recipientList-entry u-clickable horizontal center js-organisation" data-organisation-id="<%- @organization.id %>">
+<li class="recipientList-entry u-clickable horizontal center js-organization" data-organization-id="<%- @organization.id %>">
   <div class="recipientList-iconSpacer centered">
-    <div class="white organisation icon"></div>
+    <div class="white organization icon"></div>
   </div>
   <div class="recipientList-name flex u-textTruncat">
     <%= @organization.displayName() %>
diff --git a/app/assets/javascripts/app/views/generic/user_search/item_organization_members.jst.eco b/app/assets/javascripts/app/views/generic/user_search/item_organization_members.jst.eco
index c3bf75a00..baa55e3a7 100644
--- a/app/assets/javascripts/app/views/generic/user_search/item_organization_members.jst.eco
+++ b/app/assets/javascripts/app/views/generic/user_search/item_organization_members.jst.eco
@@ -1,4 +1,4 @@
-<ul class="recipientList-organisationMembers hide" id="<%- @organization.id %>">
+<ul class="recipientList-organizationMembers hide" id="<%- @organization.id %>">
   <li class="recipientList-controls u-clickable js-back">
     <div class="recipientList-backClickArea centered">
       <div class="recipientList-backButton">
diff --git a/app/assets/javascripts/app/views/layout_ref/content.jst.eco b/app/assets/javascripts/app/views/layout_ref/content.jst.eco
index b534259fd..321da5435 100644
--- a/app/assets/javascripts/app/views/layout_ref/content.jst.eco
+++ b/app/assets/javascripts/app/views/layout_ref/content.jst.eco
@@ -80,24 +80,24 @@
           <div class="dropdown js-recipientDropdown">
 
             <div class="dropdown-toggle u-positionOrigin" data-toggle="dropdown">
-              <input id="customer_id_autocompletion2" name="customer_id_autocompletion" class="ui-autocomplete-input form-control" autocapitalize="off" placeholder="Enter Person or Organisation/Company" autocomplete="off" role="textbox" aria-autocomplete="list" aria-haspopup="true">
+              <input id="customer_id_autocompletion2" name="customer_id_autocompletion" class="ui-autocomplete-input form-control" autocapitalize="off" placeholder="Enter Person or Organization/Company" autocomplete="off" role="textbox" aria-autocomplete="list" aria-haspopup="true">
               <span class="select-arrow icon"></span>
             </div>
 
             <div class="dropdown-menu" aria-labelledby="customer_id">
 
               <ul class="recipientList" role="menu">
-                <li class="recipientList-entry u-clickable horizontal center js-organisation" data-organisation-id="AlbrechtBertschlerGmbG">
+                <li class="recipientList-entry u-clickable horizontal center js-organization" data-organization-id="AlbrechtBertschlerGmbG">
                   <div class="recipientList-iconSpacer centered">
-                    <div class="white organisation icon"></div>
+                    <div class="white organization icon"></div>
                   </div>
                   <div class="recipientList-name flex u-textTruncat">
                     Albrecht &amp; Bertschler GmbH
                     <span class="recipientList-detail">- 4 Personen</span>
                   </div>
-                  <div class="white right arrow icon"></div>                <li class="recipientList-entry u-clickable horizontal center js-organisation" data-organisation-id="BENCHMARKhumanresources">
+                  <div class="white right arrow icon"></div>                <li class="recipientList-entry u-clickable horizontal center js-organization" data-organization-id="BENCHMARKhumanresources">
                   <div class="recipientList-iconSpacer centered">
-                    <div class="white organisation icon"></div>
+                    <div class="white organization icon"></div>
                   </div>
                   <div class="recipientList-name flex u-textTruncat">
                     BENCHMARK human resources
@@ -134,14 +134,14 @@
 
                 <li class="recipientList-entry u-clickable horizontal center">
                   <div class="recipientList-iconSpacer centered">
-                    <div class="white organisation icon"></div>
+                    <div class="white organization icon"></div>
                   </div>
                   <div class="recipientList-name flex u-textTruncat">
                     Benteler SGL Composite Technology GmbH
                     <span class="recipientList-detail"></span>
                   </div>
 
-                <li class="recipientList-entry u-clickable horizontal center js-organisation">
+                <li class="recipientList-entry u-clickable horizontal center js-organization">
                   <div class="recipientList-iconSpacer centered">
                     <div class="white team icon"></div>
                   </div>
@@ -151,9 +151,9 @@
                   </div>
                   <div class="white right arrow icon"></div>
 
-                <li class="recipientList-entry u-clickable horizontal center js-organisation">
+                <li class="recipientList-entry u-clickable horizontal center js-organization">
                   <div class="recipientList-iconSpacer centered">
-                    <div class="white organisation icon"></div>
+                    <div class="white organization icon"></div>
                   </div>
                   <div class="recipientList-name flex u-textTruncat">
                     Bernecker + Rainer Industrie-Elektronik Ges.m.b.H.
@@ -161,9 +161,9 @@
                   </div>
                   <div class="white right arrow icon"></div>
 
-                <li class="recipientList-entry u-clickable horizontal center js-organisation">
+                <li class="recipientList-entry u-clickable horizontal center js-organization">
                   <div class="recipientList-iconSpacer centered">
-                    <div class="white organisation icon"></div>
+                    <div class="white organization icon"></div>
                   </div>
                   <div class="recipientList-name flex u-textTruncat">
                     Bertsch Ecopower GmbH
@@ -178,7 +178,7 @@
                   <div class="recipientList-name flex u-textTruncat">
                     <%- @T('Create new Customer') %>
                   </div>
-              </ul>              <ul class="recipientList-organisationMembers hide" id="AlbrechtBertschlerGmbG">
+              </ul>              <ul class="recipientList-organizationMembers hide" id="AlbrechtBertschlerGmbG">
                 <li class="recipientList-controls u-clickable js-back">
                   <div class="recipientList-backClickArea centered">
                     <div class="recipientList-backButton">
@@ -222,7 +222,7 @@
                     Katharina Nussman
                     <span class="recipientList-detail">- Albrecht &amp; Bertschler GmbG</span>
                   </div>
-              </ul>              <ul class="recipientList-organisationMembers hide" id="BENCHMARKhumanresources">
+              </ul>              <ul class="recipientList-organizationMembers hide" id="BENCHMARKhumanresources">
                 <li class="recipientList-controls u-clickable js-back">
                   <div class="recipientList-backClickArea centered">
                     <div class="recipientList-backButton">
diff --git a/app/assets/javascripts/app/views/layout_ref/organization_profile.jst.eco b/app/assets/javascripts/app/views/layout_ref/organization_profile.jst.eco
index 8b0a8d1da..a621ad4f5 100644
--- a/app/assets/javascripts/app/views/layout_ref/organization_profile.jst.eco
+++ b/app/assets/javascripts/app/views/layout_ref/organization_profile.jst.eco
@@ -16,7 +16,7 @@
         </ul>
       </div>
       <div class="profile-organizationIcon">
-        <div class="organisation icon"></div>
+        <div class="organization icon"></div>
       </div>
       <h1>Steuerbüro C. Kaik</h1>
     </div>
diff --git a/app/assets/javascripts/app/views/layout_ref/user_profile.jst.eco b/app/assets/javascripts/app/views/layout_ref/user_profile.jst.eco
index ac595cdc2..62d3f770d 100644
--- a/app/assets/javascripts/app/views/layout_ref/user_profile.jst.eco
+++ b/app/assets/javascripts/app/views/layout_ref/user_profile.jst.eco
@@ -26,7 +26,7 @@
           <a href="mailto:doreen.kubiak@gmail.com">doreen.kubiak@gmail.com</a>
         </div>
         <div class="profile-detailsEntry">
-          <label>Organisation</label>
+          <label>Organization</label>
           Steuerbüro C. Kaik
         </div>
         <div class="profile-detailsEntry">
@@ -56,10 +56,10 @@
       </div>
     </div>
     <div class="profile-section">
-      <!-- if user has organisation -->
+      <!-- if user has organization -->
       <div class="tabs wide-tabs horizontal">
         <div class="tab js-userTickets active">Tickets von Doreen Kubiak</div>
-        <div class="tab js-organisationTickets">Tickets von Steuerbüro C. Kaik</div>
+        <div class="tab js-organizationTickets">Tickets von Steuerbüro C. Kaik</div>
       </div>
       <!-- endif -->
       <div class="profile-ticketLists horizontal">
diff --git a/app/assets/javascripts/app/views/organization_profile.jst.eco b/app/assets/javascripts/app/views/organization_profile.jst.eco
index df887d366..730a6f911 100644
--- a/app/assets/javascripts/app/views/organization_profile.jst.eco
+++ b/app/assets/javascripts/app/views/organization_profile.jst.eco
@@ -4,7 +4,7 @@
     <div class="profile-section vertical centered">
       <div class="align-right profile-action js-action"></div>
       <div class="profile-organizationIcon">
-        <div class="organisation icon"></div>
+        <div class="organization icon"></div>
       </div>
       <h1><%= @organization.displayName() %></h1>
     </div>
diff --git a/app/assets/javascripts/app/views/user_profile.jst.eco b/app/assets/javascripts/app/views/user_profile.jst.eco
index f2098d183..c4d2e08b3 100644
--- a/app/assets/javascripts/app/views/user_profile.jst.eco
+++ b/app/assets/javascripts/app/views/user_profile.jst.eco
@@ -6,7 +6,7 @@
       <%- @user.avatar("80") %>
       <h1><%= @user.displayName() %></h1>
       <% if @user.organization: %>
-        <div class="profile-organisation"><a href="<%- @user.organization.uiUrl() %>"><%= @user.organization.displayName() %></a></div>
+        <div class="profile-organization"><a href="<%- @user.organization.uiUrl() %>"><%= @user.organization.displayName() %></a></div>
       <% end %>
     </div>
 
diff --git a/app/assets/stylesheets/zammad.css.scss b/app/assets/stylesheets/zammad.css.scss
index 07261ab13..0155d6c3d 100644
--- a/app/assets/stylesheets/zammad.css.scss
+++ b/app/assets/stylesheets/zammad.css.scss
@@ -1294,15 +1294,15 @@ ol.tabs li {
        @-moz-keyframes fade { from { opacity: 0 } to { opacity: 1 } }
             @keyframes fade { from { opacity: 0 } to { opacity: 1 } }
 
-  .organisation.icon {
+  .organization.icon {
     height: 13px;
     width: 14px;
     background-position: 0 -118px;
   }
 
-  .icon-switch:hover .organisation.icon,
-  .task.active .organisation.icon,
-  .white.organisation.icon {
+  .icon-switch:hover .organization.icon,
+  .task.active .organization.icon,
+  .white.organization.icon {
     background-position: 0 -132px;
   }
 
@@ -2614,7 +2614,7 @@ footer {
     background: white;
   }
 
-  .popover .person .organisation {
+  .popover .person .organization {
     color: #a1a4a7;
   }
 
@@ -2622,8 +2622,8 @@ footer {
     margin: 8px 0;
   }
 
-  .popover .person .organisation:before { content: '('; }
-  .popover .person .organisation:after { content: ')'; }
+  .popover .person .organization:before { content: '('; }
+  .popover .person .organization:after { content: ')'; }
 
   .popover .column h3 {
     margin: 8px 0 1px;
@@ -4073,7 +4073,7 @@ footer {
   }
 
 .recipientList,
-.recipientList-organisationMembers {
+.recipientList-organizationMembers {
   list-style: none;
   padding: 0;
 }
@@ -4143,7 +4143,7 @@ footer {
     margin-bottom: -2px;
   }
 
-  .recipientList-organisationMembers {
+  .recipientList-organizationMembers {
     position: absolute;
     top: 0;
     left: 0;
diff --git a/db/migrate/20140831000001_create_object_manager.rb b/db/migrate/20140831000001_create_object_manager.rb
index 33b26d5b5..fe911334a 100644
--- a/db/migrate/20140831000001_create_object_manager.rb
+++ b/db/migrate/20140831000001_create_object_manager.rb
@@ -34,7 +34,7 @@ class CreateObjectManager < ActiveRecord::Migration
         :multiple       => false,
         :null           => false,
         :limit          => 200,
-        :placeholder    => 'Enter Person or Organisation/Company',
+        :placeholder    => 'Enter Person or Organization/Company',
         :minLengt       => 2,
         :translate      => false,
       },