Index: channels/chan_sip.c
===================================================================
--- channels/chan_sip.c	(revision 33812)
+++ channels/chan_sip.c	(working copy)
@@ -12911,7 +12911,7 @@
 	else
 		memset(&p->vredirip, 0, sizeof(p->vredirip));
 	p->redircodecs = codecs;
-	if (!ast_test_flag(p, SIP_GOTREFER)) {
+	if (codecs && !ast_test_flag(p, SIP_GOTREFER)) {
 		if (!p->pendinginvite) {
 			if (option_debug > 2) {
 				char iabuf[INET_ADDRSTRLEN];