diff --git a/types/redux-saga-tester/index.d.ts b/types/redux-saga-tester/index.d.ts
index d7772626ef..8ff00565a5 100644
--- a/types/redux-saga-tester/index.d.ts
+++ b/types/redux-saga-tester/index.d.ts
@@ -43,9 +43,10 @@ export default class SagaTester<StateType extends object> {
 
     /**
      * Returns a promise that will resolve if the specified action is dispatched to the store.
+     * @param actionType Action name.
      * @param futureOnly Causes waitFor to only resolve if the action is called in the future.
      */
-    waitFor(actionType: string, futureOnly?: boolean): PromiseLike<void>;
+    waitFor(actionType: string, futureOnly?: boolean): PromiseLike<AnyAction>;
 
     /**
      * Returns whether the specified was dispatched in the past.