diff --git a/web/app/controllers/api_music_sessions_controller.rb b/web/app/controllers/api_music_sessions_controller.rb
index 9f43e909e..32b7726fc 100644
--- a/web/app/controllers/api_music_sessions_controller.rb
+++ b/web/app/controllers/api_music_sessions_controller.rb
@@ -166,7 +166,7 @@ class ApiMusicSessionsController < ApiController
   def show
     unless @music_session.can_see? current_user
       # render :json => { :message => ValidationMessages::PERMISSION_VALIDATION_ERROR }, :status => 403
-      raise JamRuby::PermissionError
+      raise JamRuby::JamPermissionError
     end
   end