diff --git a/http-errors/http-errors-tests.ts b/http-errors/http-errors-tests.ts
index d1400bbe4c..4403259008 100644
--- a/http-errors/http-errors-tests.ts
+++ b/http-errors/http-errors-tests.ts
@@ -4,12 +4,6 @@
 import * as createError from 'http-errors';
 import * as express from 'express';
 
-declare namespace Express {
-    export interface Request {
-        user?: any
-    }
-}
-
 var app = express();
 
 app.use(function (req, res, next) {
diff --git a/http-errors/http-errors.d.ts b/http-errors/http-errors.d.ts
index 48d7469ba4..745e313995 100644
--- a/http-errors/http-errors.d.ts
+++ b/http-errors/http-errors.d.ts
@@ -3,6 +3,12 @@
 // Definitions by: Tanguy Krotoff <https://github.com/tkrotoff>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
+declare namespace Express {
+    export interface Request {
+        user?: any
+    }
+}
+
 declare module 'http-errors' {
     namespace createHttpError {