diff --git a/modules/store/src/feature_creator.ts b/modules/store/src/feature_creator.ts
index 9e298f3bd8..8a92255dfd 100644
--- a/modules/store/src/feature_creator.ts
+++ b/modules/store/src/feature_creator.ts
@@ -138,10 +138,10 @@ export function createFeature<FeatureName extends string, FeatureState>(
  *   name: 'products',
  *   reducer: createReducer(
  *     initialState,
- *     on(ProductsApiActions.loadSuccess(state, { products }) => ({
+ *     on(ProductsApiActions.loadSuccess, (state, { products }) => ({
  *       ...state,
  *       products,
- *     }),
+ *     })),
  *   ),
  * });
  *