diff --git a/packages/event-handler/src/rest/Router.ts b/packages/event-handler/src/rest/Router.ts
index a79ab8decc..f8ee13e7a9 100644
--- a/packages/event-handler/src/rest/Router.ts
+++ b/packages/event-handler/src/rest/Router.ts
@@ -350,6 +350,7 @@ class Router {
       await pipeline(nodeStream, resStream);
     } else {
       resStream.write('');
+      resStream.end();
     }
   }