diff --git a/src/brpc/selective_channel.cpp b/src/brpc/selective_channel.cpp
index 5a81582108..8877994369 100644
--- a/src/brpc/selective_channel.cpp
+++ b/src/brpc/selective_channel.cpp
@@ -334,7 +334,8 @@ int Sender::IssueRPC(int64_t start_realtime_us) {
     sub_cntl->set_request_code(_main_cntl->request_code());
     // Forward request attachment to the subcall
     sub_cntl->request_attachment().append(_main_cntl->request_attachment());
-    
+    sub_cntl->http_request() = _main_cntl->http_request();
+
     sel_out.channel()->CallMethod(_main_cntl->_method,
                                   &r.sub_done->_cntl,
                                   _request,