diff --git a/modules/effects/src/actions.ts b/modules/effects/src/actions.ts
index f8968997bb..cf4b700669 100644
--- a/modules/effects/src/actions.ts
+++ b/modules/effects/src/actions.ts
@@ -21,7 +21,7 @@ export class Actions<V = Action> extends Observable<V> {
     return observable;
   }
 
-  ofType(...allowedTypes: string[]): Actions {
+  ofType(...allowedTypes: string[]): Actions<V> {
     return filter.call(this, (action: Action) =>
       allowedTypes.some(type => type === action.type),
     );