diff --git a/plugins/push_notification/lib/push_notification_plugin.rb b/plugins/push_notification/lib/push_notification_plugin.rb
index a27908c..b14d089 100644
--- a/plugins/push_notification/lib/push_notification_plugin.rb
+++ b/plugins/push_notification/lib/push_notification_plugin.rb
@@ -39,7 +39,7 @@ class PushNotificationPlugin < Noosfero::Plugin
   end
 
   def self.api_mount_points
-    [PushNotificationPlugin::Api]
+    [PushNotificationPlugin::API]
   end
 
   def self.plugin_description
diff --git a/plugins/push_notification/lib/push_notification_plugin/api.rb b/plugins/push_notification/lib/push_notification_plugin/api.rb
index fda2663..e45e571 100644
--- a/plugins/push_notification/lib/push_notification_plugin/api.rb
+++ b/plugins/push_notification/lib/push_notification_plugin/api.rb
@@ -1,7 +1,9 @@
-require_dependency 'api/helpers'
 require_relative 'api_entities'
 
-class PushNotificationPlugin::Api < Grape::API
+# Can't be called Api as will result in:
+# warning: toplevel constant Api referenced by PushNotificationPlugin::Api
+# To fix this PushNotificationPlugin should be a module
+class PushNotificationPlugin::API < Grape::API
 
   include Api::Helpers
 
--
libgit2 0.21.2