diff --git a/frontend/src/metabase/redux/app.ts b/frontend/src/metabase/redux/app.ts
index 2d5f8cf494af54d3d3077f33a101061f6beffe96..95562a6082fbcccc0e7dfc86ac0986fcaf454714 100644
--- a/frontend/src/metabase/redux/app.ts
+++ b/frontend/src/metabase/redux/app.ts
@@ -100,7 +100,7 @@ const isNavbarOpen = handleActions(
 export default combineReducers({
   errorPage,
   isNavbarOpen,
-  isDndAvailable: initValue => {
+  isDndAvailable: (initValue: unknown) => {
     if (typeof initValue === "boolean") {
       return initValue;
     }