1 files changed, 1 insertions, 1 deletions
diff --git a/occ.c b/occ.c
index b84b18d..bcf91cc 100644
--- a/occ.c
+++ b/occ.c
@@ -369,7 +369,7 @@ process_received_occ_msg (struct context *c)
 	       c->c2.max_send_size_remote,
 	       c->c2.max_recv_size_local);
 	  if (!c->options.fragment
-	      && c->options.ce.proto == PROTO_UDPv4
+	      && (proto_is_dgram(c->options.ce.proto))
 	      && c->c2.max_send_size_local > TUN_MTU_MIN
 	      && (c->c2.max_recv_size_remote < c->c2.max_send_size_local
 		  || c->c2.max_recv_size_local < c->c2.max_send_size_remote))