diff --git a/app/controllers/apps_controller.rb b/app/controllers/apps_controller.rb
index 04bea0a..eed03f0 100644
--- a/app/controllers/apps_controller.rb
+++ b/app/controllers/apps_controller.rb
@@ -102,7 +102,7 @@ class AppsController < ApplicationController
       # set the app's notification service
       if params[:app][:notification_service_attributes] && notification_type = params[:app][:notification_service_attributes][:type]
         available_notification_classes = [NotificationService] + NotificationService.subclasses
-        notification_class = available_notification_classes.detect{|c| c.name == tracker_type}
+        notification_class = available_notification_classes.detect{|c| c.name == notification_type}
         if !notification_class.nil?
           app.notification_service = notification_class.new(params[:app][:notification_service_attributes])
         end
--
libgit2 0.21.2