diff --git a/core/src/server/web_impl/handler/WebRequestHandler.h b/core/src/server/web_impl/handler/WebRequestHandler.h
index 6f18dac27c..7330427009 100644
--- a/core/src/server/web_impl/handler/WebRequestHandler.h
+++ b/core/src/server/web_impl/handler/WebRequestHandler.h
@@ -237,7 +237,7 @@ class WebRequestHandler {
     SystemOp(const OString& op, const OString& body_str, OString& response_str);
 
  public:
-    WebRequestHandler&
+    void
     RegisterRequestHandler(const RequestHandler& handler) {
         request_handler_ = handler;
     }