diff --git a/app/api/mobile/apis/project_packages.rb b/app/api/mobile/apis/project_packages.rb
index d5c4143f..1fa7715d 100644
--- a/app/api/mobile/apis/project_packages.rb
+++ b/app/api/mobile/apis/project_packages.rb
@@ -1,3 +1,5 @@
+# encoding=utf-8
+
 module Mobile
   module Apis
     class ProjectPackages < Grape::API