diff --git a/examples/react-native/Example.js b/examples/react-native/Example.js
index a90ba79a0..1a57858e9 100644
--- a/examples/react-native/Example.js
+++ b/examples/react-native/Example.js
@@ -35,7 +35,7 @@ const styles = StyleSheet.create({
   },
 });
 
-const defaultReducer = Reducer(Actions);
+const defaultReducer = new Reducer();
 const reducerCreate = () => {
   return (state, action) => {
     console.log('reducer: ACTION:', action);
diff --git a/package.json b/package.json
index 13e5d85e9..d90b60ce6 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "react-native-router-flux",
-  "version": "4.0.3",
+  "version": "4.0.4",
   "description": "React Native Router using Flux architecture",
   "repository": {
     "type": "git",
diff --git a/src/Reducer.js b/src/Reducer.js
index 184a960e9..e4bf7c911 100644
--- a/src/Reducer.js
+++ b/src/Reducer.js
@@ -5,6 +5,9 @@ import { getActiveState, popPrevious } from './State';
 
 export default function createReducer(navigationStore) {
   return (state, action) => {
+    if (!navigationStore) {
+      navigationStore = require('./navigationStore').default;
+    }
     const { type, routeName } = action;
     if (type === ActionConst.POP_TO) {
       let nextScene = '';