diff --git a/types/express-wechat-access/express-wechat-access-tests.ts b/types/express-wechat-access/express-wechat-access-tests.ts
index 659c5b3639..60cc5d9d88 100644
--- a/types/express-wechat-access/express-wechat-access-tests.ts
+++ b/types/express-wechat-access/express-wechat-access-tests.ts
@@ -3,7 +3,7 @@ import * as weAccessMiddleware from 'express-wechat-access';
 
 const app: express.Application = express();
 
-const options: weAccessMiddleware.IWeAccessMidOption = {
+const options: weAccessMiddleware.WeAccessMidOption = {
     appId: 'xxxxx',
     appSecret: 'xxxxx'
 };
diff --git a/types/express-wechat-access/index.d.ts b/types/express-wechat-access/index.d.ts
index f871d1733e..fb0d58701d 100644
--- a/types/express-wechat-access/index.d.ts
+++ b/types/express-wechat-access/index.d.ts
@@ -5,31 +5,34 @@
 // TypeScript Version: 2.2
 
 /// <reference types="node" />
-/// <reference types="express" />
 
 import { Response, NextFunction } from 'express';
 import * as http from 'http';
 import { EventEmitter } from 'events';
 
-interface IMidOption {
-    accessTokenUrl?: string;
-    ticketUrl?: string;
-    appId: string;
-    appSecret: string;
-    https?: boolean;
-}
-
-type IMiddleware = (req: any, res: Response | http.ServerResponse, next: NextFunction) => any;
+type WeMiddleware = (req: any, res: Response | http.ServerResponse, next: NextFunction) => any;
 
 declare function weAccessMiddleware(
-    options: IMidOption,
+    options: {
+        accessTokenUrl?: string;
+        ticketUrl?: string;
+        appId: string;
+        appSecret: string;
+        https?: boolean;
+    },
     errorHandler?: (e: any) => any
-): IMiddleware;
+): WeMiddleware;
 
 declare namespace weAccessMiddleware {
-    interface IWeAccessMidOption extends IMidOption {}
+    interface WeAccessMidOption {
+        accessTokenUrl?: string;
+        ticketUrl?: string;
+        appId: string;
+        appSecret: string;
+        https?: boolean;
+    }
 
-    interface IWeAccessMiddleware extends IMiddleware, EventEmitter, Function {}
+    interface WeAccessMiddleware extends WeMiddleware, EventEmitter, Function {}
 }
 
 export = weAccessMiddleware;
diff --git a/types/express-wechat-access/tsconfig.json b/types/express-wechat-access/tsconfig.json
index 9924528f6b..e24d740f2c 100644
--- a/types/express-wechat-access/tsconfig.json
+++ b/types/express-wechat-access/tsconfig.json
@@ -7,7 +7,7 @@
         "noImplicitAny": true,
         "noImplicitThis": true,
         "strictFunctionTypes": true,
-        "strictNullChecks": false,
+        "strictNullChecks": true,
         "baseUrl": "../",
         "typeRoots": [
             "../"
diff --git a/types/express-wechat-access/tslint.json b/types/express-wechat-access/tslint.json
index 886d87b3b7..3db14f85ea 100644
--- a/types/express-wechat-access/tslint.json
+++ b/types/express-wechat-access/tslint.json
@@ -1,11 +1 @@
-{
-    "extends": "dtslint/dt.json",
-    "rules": {
-        "interface-name": false,
-        "no-empty-interface": false,
-        "no-namespace": false,
-        "no-reference-import": false,
-        "no-var-keyword": false,
-        "strict-export-declare-modifiers": false
-    }
-}
+{ "extends": "dtslint/dt.json" }