diff --git a/extend/extend.d.ts b/extend/extend.d.ts
index 72dae5314..b73ccc00d 100644
--- a/extend/extend.d.ts
+++ b/extend/extend.d.ts
@@ -5,6 +5,6 @@
 declare module "extend" {
 
     function extend(deepOrObject:boolean | Object, ...objectN: Object[]): any;
-    namespace extend {};
+    namespace extend {}
     export = extend;
 }