diff --git a/types/express/express-tests.ts b/types/express/express-tests.ts
index 12d3b47676..37cf543df5 100644
--- a/types/express/express-tests.ts
+++ b/types/express/express-tests.ts
@@ -137,7 +137,7 @@ namespace express_tests {
         req.next;
         res.req;
     });
-    
+
     // Test mounting sub-apps
     app.use('/sub-app', express());