diff --git a/lib/redmine/hook.rb b/lib/redmine/hook.rb
index 419b75e..7f518d8 100644
--- a/lib/redmine/hook.rb
+++ b/lib/redmine/hook.rb
@@ -125,11 +125,11 @@ module Redmine
           end
         end
       end
-
+      
       def controller
         nil
       end
-
+      
       def config
         ActionController::Base.config
       end
@@ -171,5 +171,5 @@ module Redmine
   end
 end
 
-ActionView::Base.send(:include, Redmine::Hook::Helper)
+ApplicationHelper.send(:include, Redmine::Hook::Helper)
 ActionController::Base.send(:include, Redmine::Hook::Helper)
diff --git a/lib/redmine/themes.rb b/lib/redmine/themes.rb
index 0381f26..a9a59bb 100644
--- a/lib/redmine/themes.rb
+++ b/lib/redmine/themes.rb
@@ -126,7 +126,7 @@ module Redmine
   end
 end
 
-module ThemesHelper
+module ApplicationHelper
   def current_theme
     unless instance_variable_defined?(:@current_theme)
       @current_theme = Redmine::Themes.theme(Setting.ui_theme)
@@ -141,4 +141,3 @@ module ThemesHelper
     end
   end
 end
-ActionView::Base.send(:include, ThemesHelper)