diff --git a/frontend/middleware/group-only.ts b/frontend/middleware/group-only.ts
index 92882287cafe..84f28f12725d 100644
--- a/frontend/middleware/group-only.ts
+++ b/frontend/middleware/group-only.ts
@@ -5,6 +5,7 @@ interface GroupOnlyRedirectParams {
 }
 
 export default function ({ $auth, route, redirect }: GroupOnlyRedirectParams) {
+  // this can only be used for routes that have a groupSlug parameter (e.g. /g/:groupSlug/...)
   if (route.params.groupSlug !== $auth.user.groupSlug) {
     redirect("/")
   }