diff --git a/types/multer-gridfs-storage/v1/index.d.ts b/types/multer-gridfs-storage/v1/index.d.ts
index 93cf650bb8..67e6abe70b 100644
--- a/types/multer-gridfs-storage/v1/index.d.ts
+++ b/types/multer-gridfs-storage/v1/index.d.ts
@@ -1,6 +1,6 @@
 // Type definitions for multer-gridfs-storage 1.1
 // Project: https://github.com/devconcept/multer-gridfs-storage
-// Definitions by: devconcept <https://github.com/devconcept/>
+// Definitions by: devconcept <https://github.com/devconcept>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 import { EventEmitter } from 'events';
diff --git a/types/multer-gridfs-storage/v1/multer-gridfs-storage-tests.ts b/types/multer-gridfs-storage/v1/multer-gridfs-storage-tests.ts
index b341fe0cea..73522eebca 100644
--- a/types/multer-gridfs-storage/v1/multer-gridfs-storage-tests.ts
+++ b/types/multer-gridfs-storage/v1/multer-gridfs-storage-tests.ts
@@ -2,11 +2,11 @@ import * as MulterGridfsStorage from 'multer-gridfs-storage';
 import { Grid } from "gridfs-stream";
 
 // Exported interfaces
-let opt1: MulterGridfsStorage.GfsStorageOptions;
-let opt2: MulterGridfsStorage.UrlStorageOptions;
+declare const opt1: MulterGridfsStorage.GfsStorageOptions;
+declare const opt2: MulterGridfsStorage.UrlStorageOptions;
 
 // All options
-let gfsCtr = new MulterGridfsStorage({
+const gfsCtr = new MulterGridfsStorage({
 	gfs: new Grid(),
 	filename: (req, file, cb) => cb(null, ''),
 	chunkSize: (req, file, cb) => cb(null, 1),
@@ -16,7 +16,7 @@ let gfsCtr = new MulterGridfsStorage({
 	root: (req, file, cb) => cb(null, 'unicorns')
 });
 
-let urlCtr = new MulterGridfsStorage({
+const urlCtr = new MulterGridfsStorage({
 	url: '',
 	filename: (req, file, cb) => cb(null, ''),
 	chunkSize: (req, file, cb) => cb(null, 1),
@@ -27,11 +27,11 @@ let urlCtr = new MulterGridfsStorage({
 });
 
 // Other properties are optional
-let gfsOnly = new MulterGridfsStorage({
+const gfsOnly = new MulterGridfsStorage({
 	gfs: new Grid()
 });
 
-let urlOnly = new MulterGridfsStorage({
+const urlOnly = new MulterGridfsStorage({
 	url: ''
 });