diff --git a/service-src/service_socket.c b/service-src/service_socket.c
index e3273eb4..2bdb54b6 100644
--- a/service-src/service_socket.c
+++ b/service-src/service_socket.c
@@ -259,7 +259,7 @@ forward(struct skynet_context * context, struct socket *s, struct socket_pool *p
 	if (s->status == STATUS_HALFCLOSE) {
 		free(buffer);
 	} else {
-		skynet_send(context, 0, s->source, PTYPE_CLIENT, 0, buffer, r + 4);
+		skynet_send(context, 0, s->source, PTYPE_CLIENT | PTYPE_TAG_DONTCOPY, 0, buffer, r + 4);
 	}
 }