diff --git a/redux-immutable/redux-immutable-test.ts b/redux-immutable/redux-immutable-test.ts
new file mode 100644
index 000000000..dd0585563
--- /dev/null
+++ b/redux-immutable/redux-immutable-test.ts
@@ -0,0 +1,6 @@
+import { combineReducers } from 'redux-immutable';
+import { routerReducer } from 'react-router-redux';
+
+combineReducers({
+   routing: routerReducer
+});
\ No newline at end of file
diff --git a/redux-immutable/redux-immutable.d.ts b/redux-immutable/redux-immutable.d.ts
new file mode 100644
index 000000000..418919d2a
--- /dev/null
+++ b/redux-immutable/redux-immutable.d.ts
@@ -0,0 +1,3 @@
+declare module "redux-immutable" {
+    export function combineReducers(reducers : Object): Object;
+}
\ No newline at end of file