diff --git a/method-override/method-override.d.ts b/method-override/method-override.d.ts
index 73e2956cd2..e201c5434a 100644
--- a/method-override/method-override.d.ts
+++ b/method-override/method-override.d.ts
@@ -21,9 +21,8 @@ declare module "method-override" {
     }
 
 
-    type stringType = string;
-    type functionType = (req: express.Request, res: express.Response) => string; 
-    function e(getter?: stringType | functionType, options?: e.MethodOverrideOptions): express.RequestHandler;
+    function e(getter?: string | ((req: express.Request, res: express.Response) => string), options?: e.MethodOverrideOptions): express.RequestHandler;
+
 
     export = e;
 }