diff --git a/.rubocop.yml b/.rubocop.yml
index 88f09e33..d8c10641 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -86,6 +86,10 @@ Style/ZeroLengthPredicate:
   Exclude:
     - lib/redmine_dmsf/webdav/dmsf_resource.rb
 
+Rails/BulkChangeTable:
+  Exclude:
+    - db/migrate/20170217141601_add_dmsf_not_inheritable_to_custom_fields.rb # Easy tests
+
 Rails/DangerousColumnNames:
   Exclude:
     - db/migrate/20170330131901_create_dmsf_folder_permissions.rb
@@ -109,6 +113,11 @@ Rails/SkipsModelValidations:
     - db/migrate/20140519133201_trash_bin.rb
     - db/migrate/07_dmsf_1_4_4.rb
 
+Rails/ThreeStateBooleanColumn:
+  Exclude:
+    - db/migrate/04_dmsf_0_9_0.rb # Easy tests
+    - db/migrate/20170217141601_add_dmsf_not_inheritable_to_custom_fields.rb # Easy tests
+
 Rails/UniqueValidationWithoutIndex:
   Exclude:
     - app/models/dmsf_folder.rb # TODO: Create a case insensitive index in DB migrations
diff --git a/db/migrate/04_dmsf_0_9_0.rb b/db/migrate/04_dmsf_0_9_0.rb
index 49c1fbb5..4ded4a44 100644
--- a/db/migrate/04_dmsf_0_9_0.rb
+++ b/db/migrate/04_dmsf_0_9_0.rb
@@ -21,7 +21,12 @@
 # Add column
 class Dmsf090 < ActiveRecord::Migration[4.2]
   def up
-    add_column :members, :dmsf_mail_notification, :boolean, null: false, default: false
+    if defined?(EasyExtensions)
+      add_column :members, :dmsf_mail_notification, :boolean, default: false
+    else
+      add_column :members, :dmsf_mail_notification, :boolean,
+                 null: false, default: false
+    end
     drop_table :dmsf_user_prefs
   end
 
diff --git a/db/migrate/20170217141601_add_dmsf_not_inheritable_to_custom_fields.rb b/db/migrate/20170217141601_add_dmsf_not_inheritable_to_custom_fields.rb
index c9c8a5cd..5a3ecf24 100644
--- a/db/migrate/20170217141601_add_dmsf_not_inheritable_to_custom_fields.rb
+++ b/db/migrate/20170217141601_add_dmsf_not_inheritable_to_custom_fields.rb
@@ -21,7 +21,11 @@
 # Add column
 class AddDmsfNotInheritableToCustomFields < ActiveRecord::Migration[4.2]
   def change
-    add_column :custom_fields, :dmsf_not_inheritable, :boolean,
-               null: false, default: false
+    if defined?(EasyExtensions)
+      add_column :custom_fields, :dmsf_not_inheritable, :boolean, default: false
+    else
+      add_column :custom_fields, :dmsf_not_inheritable, :boolean,
+                 null: false, default: false
+    end
   end
 end
diff --git a/lib/redmine_dmsf/hooks/views/issue_view_hooks.rb b/lib/redmine_dmsf/hooks/views/issue_view_hooks.rb
index c7ca14d3..17f9dc26 100644
--- a/lib/redmine_dmsf/hooks/views/issue_view_hooks.rb
+++ b/lib/redmine_dmsf/hooks/views/issue_view_hooks.rb
@@ -36,7 +36,7 @@ module RedmineDmsf
           description = defined?(EasyExtensions) && EasySetting.value('attachment_description')
           # Radio buttons
           if allowed_to_attach_documents(container) && allowed_to_attach_attachments(container)
-            html << description ? '<p>' : '<div>'
+            html << (description ? '<p>' : '<div>')
             classes = +'inline'
             html << "<label class=\"#{classes}\">"
             onchange = %($(".attachments-container:not(.dmsf-uploader)").show();
diff --git a/lib/redmine_dmsf/patches/role_patch.rb b/lib/redmine_dmsf/patches/role_patch.rb
index 1e592dfe..4cd7a094 100644
--- a/lib/redmine_dmsf/patches/role_patch.rb
+++ b/lib/redmine_dmsf/patches/role_patch.rb
@@ -34,6 +34,7 @@ module RedmineDmsf
       def remove_dmsf_references
         return unless id
 
+        substitute = User.anonymous
         DmsfFolderPermission.where(object_id: id, object_type: 'Role').update_all object_id: substitute.id
       end
     end