diff --git a/app/assets/javascripts/discourse/app/lib/plugin-api.gjs b/app/assets/javascripts/discourse/app/lib/plugin-api.gjs
index 204b3eea61e..161ad6f1de6 100644
--- a/app/assets/javascripts/discourse/app/lib/plugin-api.gjs
+++ b/app/assets/javascripts/discourse/app/lib/plugin-api.gjs
@@ -165,6 +165,7 @@ const DEPRECATED_HEADER_WIDGETS = [
   "header-topic-info",
   "header-notifications",
   "home-logo",
+  "user-dropdown",
 ];
 
 // This helper prevents us from applying the same `modifyClass` over and over in test mode.