diff --git a/lib/utils/reducers-utils.js b/lib/utils/reducers-utils.js
--- a/lib/utils/reducers-utils.js
+++ b/lib/utils/reducers-utils.js
@@ -1,18 +1,15 @@
 // @flow
 
-import type { BaseNavInfo } from '../types/nav-types.js';
-import type { BaseAppState } from '../types/redux-types.js';
-
-function resetUserSpecificState<N: BaseNavInfo, T: BaseAppState<N>>(
+function resetUserSpecificState<T: { +[string]: mixed }>(
   state: T,
   defaultState: T,
-  nonUserSpecificFields: $ReadOnlyArray<$Keys<T>>,
+  nonUserSpecificFields: $ReadOnlyArray<string>,
 ): T {
   let newState: T = { ...defaultState };
   for (const field of nonUserSpecificFields) {
     newState = {
       ...newState,
-      [(field: string)]: state[field],
+      [field]: state[field],
     };
   }
   return newState;