diff --git a/src/client/LangSelector.ts b/src/client/LangSelector.ts
index d5a5b5770..58e4b9415 100644
--- a/src/client/LangSelector.ts
+++ b/src/client/LangSelector.ts
@@ -195,6 +195,7 @@ export class LangSelector extends LitElement {
       "o-modal",
       "o-button",
       "territory-patterns-modal",
+      "fluent-slider",
     ];
 
     document.title = this.translateText("main.title") ?? document.title;