diff --git a/package.json b/package.json
index 9534aa5..69385c2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "focus-core",
-    "version": "0.16.0-beta3",
+    "version": "0.16.0-beta4",
     "description": "Focus library core part.",
     "main": "index.js",
     "babel": {
diff --git a/src/router/index.d.ts b/src/router/index.d.ts
index 31869e9..0038b00 100644
--- a/src/router/index.d.ts
+++ b/src/router/index.d.ts
@@ -8,5 +8,5 @@ declare let Router: {
     extend<T>(config: T & RouterConfig): {new(): {}}
 };
 
-export = Backbone => typeof Router
-
+declare function createRouter(Backbone: {}): typeof Router;
+export = createRouter;