diff --git a/app/api/mobile/apis/homeworks.rb b/app/api/mobile/apis/homeworks.rb
index 983cc9373..32e7142ee 100644
--- a/app/api/mobile/apis/homeworks.rb
+++ b/app/api/mobile/apis/homeworks.rb
@@ -5,7 +5,7 @@ module Mobile
     class Homeworks < Grape::API
 
       def self.get_service
-        new HomeworkService
+        HomeworkService.new
       end
 
       resources :homeworks do