diff --git a/app/assets/javascripts/app/controllers/agent_ticket_create.coffee b/app/assets/javascripts/app/controllers/agent_ticket_create.coffee
index 44c04a193..d4123771e 100644
--- a/app/assets/javascripts/app/controllers/agent_ticket_create.coffee
+++ b/app/assets/javascripts/app/controllers/agent_ticket_create.coffee
@@ -228,7 +228,7 @@ class App.TicketCreate extends App.Controller
         type = @$('[name="formSenderType"]').val()
 
         if signature isnt undefined &&  signature.body && type is 'email-out'
-          signatureFinished = App.Utils.replaceTags(signature.body, { user: App.Session.get() })
+          signatureFinished = App.Utils.replaceTags(signature.body, { user: App.Session.get(), config: App.Config.all() })
 
           body = @$('[data-name=body]')
           if App.Utils.signatureCheck(body.html() || '', signatureFinished)
diff --git a/app/assets/javascripts/app/controllers/ticket_zoom/article_new.coffee b/app/assets/javascripts/app/controllers/ticket_zoom/article_new.coffee
index befeae02d..edb39480d 100644
--- a/app/assets/javascripts/app/controllers/ticket_zoom/article_new.coffee
+++ b/app/assets/javascripts/app/controllers/ticket_zoom/article_new.coffee
@@ -525,7 +525,7 @@ class App.TicketZoomArticleNew extends App.Controller
         @$('[data-name=body] [data-signature="true"]').remove()
 
       # apply new signature
-      signatureFinished = App.Utils.replaceTags(signature.body, { user: App.Session.get(), ticket: ticketCurrent })
+      signatureFinished = App.Utils.replaceTags(signature.body, { user: App.Session.get(), ticket: ticketCurrent, config: App.Config.all() })
 
       body = @$('[data-name=body]')
       if App.Utils.signatureCheck(body.html() || '', signatureFinished)
diff --git a/app/assets/javascripts/app/lib/app_post/utils.coffee b/app/assets/javascripts/app/lib/app_post/utils.coffee
index 3730670ba..2c70db01e 100644
--- a/app/assets/javascripts/app/lib/app_post/utils.coffee
+++ b/app/assets/javascripts/app/lib/app_post/utils.coffee
@@ -126,6 +126,7 @@ class App.Utils
 
   # htmlEscapedAndPhoneified = App.Utils.phoneify(rawText)
   @phoneify: (string) ->
+    return string if _.isEmpty(string)
     string = string.replace(/[^0-9,\+,#,\*]+/g, '')
       .replace(/(.)\+/, '$1')
     "tel:#{string}"