diff --git a/server/wsproxy/upstream.cc b/server/wsproxy/upstream.cc
index d18070a..ef8c703 100644
--- a/server/wsproxy/upstream.cc
+++ b/server/wsproxy/upstream.cc
@@ -101,10 +101,8 @@ void UpStream::SendStockMsg()
         }
         if (pdelnode->hdr) {
             ForwardClientMsg(*pdelnode->hdr);
-            if (pdelnode->hdr->buf) {
-                free((char*)pdelnode->hdr->buf);
-            }
-            free(pdelnode->hdr);
+            f8::MsgHdr::Destroy(pdelnode->hdr);
+            pdelnode->hdr = nullptr;
         }
         delete pdelnode;
     }