diff --git a/types/mongodb/index.d.ts b/types/mongodb/index.d.ts
index 2849770ece..c58f690433 100644
--- a/types/mongodb/index.d.ts
+++ b/types/mongodb/index.d.ts
@@ -24,9 +24,9 @@ import { ObjectID } from 'bson';
 import { EventEmitter } from 'events';
 import { Readable, Writable } from "stream";
 
-export function connect(uri: string, options?: MongoClientOptions): Promise<Db>;
-export function connect(uri: string, callback: MongoCallback<Db>): void;
-export function connect(uri: string, options: MongoClientOptions, callback: MongoCallback<Db>): void;
+export function connect(uri: string, options?: MongoClientOptions): Promise<MongoClient>;
+export function connect(uri: string, callback: MongoCallback<MongoClient>): void;
+export function connect(uri: string, options: MongoClientOptions, callback: MongoCallback<MongoClient>): void;
 
 export { Binary, DBRef, Decimal128, Double, Long, MaxKey, MinKey, ObjectID, ObjectId, Timestamp } from 'bson';
 
diff --git a/types/mongodb/mongodb-tests.ts b/types/mongodb/mongodb-tests.ts
index 12403bda37..5ffaf6818f 100644
--- a/types/mongodb/mongodb-tests.ts
+++ b/types/mongodb/mongodb-tests.ts
@@ -2,6 +2,8 @@
 import mongodb = require('mongodb');
 var MongoClient = mongodb.MongoClient;
 
+const connectionString = 'mongodb://127.0.0.1:27017/test';
+
 var format = require('util').format;
 let options: mongodb.MongoClientOptions = {
     authSource: ' ',
@@ -30,7 +32,7 @@ let options: mongodb.MongoClientOptions = {
     promoteBuffers: false,
     useNewUrlParser: false
 }
-MongoClient.connect('mongodb://127.0.0.1:27017/test', options, function (err: mongodb.MongoError, client: mongodb.MongoClient) {
+MongoClient.connect(connectionString, options, function (err: mongodb.MongoError, client: mongodb.MongoClient) {
     if (err) throw err;
     const db = client.db('test');
     var collection = db.collection('test_insert');
@@ -166,3 +168,11 @@ MongoClient.connect('mongodb://127.0.0.1:27017/test', options, function (err: mo
         const res: mongodb.Cursor<TestCollection> = testCollection.find({ _id: 123 });
     }
 })
+
+let testFunc = async () => {
+    let testClient: mongodb.MongoClient;
+    testClient = await mongodb.connect(connectionString);
+};
+
+mongodb.connect(connectionString, (err: mongodb.MongoError, client: mongodb.MongoClient) => {});
+mongodb.connect(connectionString, options, (err: mongodb.MongoError, client: mongodb.MongoClient) => {});