diff --git a/app/api/mobile/apis/project_packages.rb b/app/api/mobile/apis/project_packages.rb
index 5570304a..a31690fb 100644
--- a/app/api/mobile/apis/project_packages.rb
+++ b/app/api/mobile/apis/project_packages.rb
@@ -85,8 +85,8 @@ module Mobile
               authenticate!
               begin
                 package = current_user.project_packages.find(params[:id])
-                ProjectPackages::WinBiddingService.new(package, symbolize_params).call
-              rescue ProjectPackages::WinBiddingService::Error =>ex
+                ::ProjectPackages::WinBiddingService.new(package, symbolize_params).call
+              rescue ::ProjectPackages::WinBiddingService::Error =>ex
                 render_error(ex.message)
               end
             end