diff --git a/.rubocop.yml b/.rubocop.yml
index e3a0b7ace..4914ebed6 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -271,7 +271,5 @@ Lint/Eval:
   Enabled: false
 Rails/HasAndBelongsToMany:
   Enabled: false
-Style/MethodName:
-  Enabled: false
 Style/ModuleFunction:
   Enabled: false
diff --git a/app/controllers/object_manager_attributes_controller.rb b/app/controllers/object_manager_attributes_controller.rb
index 60a372b64..7e61985c5 100644
--- a/app/controllers/object_manager_attributes_controller.rb
+++ b/app/controllers/object_manager_attributes_controller.rb
@@ -7,7 +7,7 @@ class ObjectManagerAttributesController < ApplicationController
   def list
     return if deny_if_not_role(Z_ROLENAME_ADMIN)
     render json: {
-      objects: ObjectManager.listFrontendObjects,
+      objects: ObjectManager.list_frontend_objects,
     }
     #model_index_render(ObjectManager::Attribute, params)
   end
diff --git a/app/models/object_manager.rb b/app/models/object_manager.rb
index 187343c15..5fcfc773c 100644
--- a/app/models/object_manager.rb
+++ b/app/models/object_manager.rb
@@ -6,11 +6,11 @@ class ObjectManager
 
 list all backend managed object
 
-  ObjectManager.listObjects()
+  ObjectManager.list_objects()
 
 =end
 
-  def self.listObjects
+  def self.list_objects
     ['Ticket', 'TicketArticle', 'User', 'Organization', 'Group' ]
   end
 
@@ -18,11 +18,11 @@ list all backend managed object
 
 list all frontend managed object
 
-  ObjectManager.listFrontendObjects()
+  ObjectManager.list_frontend_objects()
 
 =end
 
-  def self.listFrontendObjects
+  def self.list_frontend_objects
     ['Ticket', 'User', 'Organization' ] #, 'Group' ]
   end
 
diff --git a/lib/session_helper.rb b/lib/session_helper.rb
index 6df31f078..c02c794f2 100644
--- a/lib/session_helper.rb
+++ b/lib/session_helper.rb
@@ -18,7 +18,7 @@ module SessionHelper
 
   def self.models(user = nil)
     models = {}
-    objects = ObjectManager.listObjects
+    objects = ObjectManager.list_objects
     objects.each {|object|
       attributes = ObjectManager::Attribute.by_object(object, user)
       models[object] = attributes