diff --git a/net_services/CXM_generic_protocol.anubis b/net_services/CXM_generic_protocol.anubis
index 9b6459f..e88ea1a 100644
--- a/net_services/CXM_generic_protocol.anubis
+++ b/net_services/CXM_generic_protocol.anubis
@@ -275,6 +275,7 @@ public define Bool
               success(source) then
                 println("NET_SERVICE send_file_ref  send ack file size "+size);
                 send_ACK_ok(mQ, _CXM_GET_FILE_REF, msg);
+                mQ.flush_wait(unique);
                 if copy_file_to_Connection(file(source), mQ.get_connection(unique), size) is
                 {
                   failure     then println("NET_SERVICE send_file_ref copy_file_to_Connection error");false,
--
libgit2 0.21.4