diff --git a/app/assets/javascripts/ui_models/application_group.ts b/app/assets/javascripts/ui_models/application_group.ts
index bc6d3b5c0..582565820 100644
--- a/app/assets/javascripts/ui_models/application_group.ts
+++ b/app/assets/javascripts/ui_models/application_group.ts
@@ -125,7 +125,7 @@ export class ApplicationGroup {
     }
 
     return () => {
-      pull( this.changeObservers, callback)
+      pull(this.changeObservers, callback)
     }
   }