diff --git a/types/three/index.d.ts b/types/three/index.d.ts
index 74ce9ac0ee..fdcae48767 100644
--- a/types/three/index.d.ts
+++ b/types/three/index.d.ts
@@ -21,6 +21,7 @@
 //                 Ethan Kay <https://github.com/elk941>,
 //                 Methuselah96 <https://github.com/Methuselah96>
 //                 Dilip Ramirez <https://github.com/Dukuo>
+//                 Zhang Hao <https://github.com/devilsparta>
 // Definitions: https://github.com//DefinitelyTyped
 // TypeScript Version: 2.8
 
@@ -32,7 +33,7 @@ export * from "./three-copyshader";
 export * from "./three-css3drenderer";
 export * from "./three-ctmloader";
 export * from "./three-ddsloader";
-export * from './three-dragcontrols';
+export * from "./three-dragcontrols";
 export * from "./three-editorcontrols";
 export * from "./three-effectcomposer";
 export * from "./three-examples";