Index: channels/chan_sip.c
===================================================================
--- channels/chan_sip.c	(revision 159472)
+++ channels/chan_sip.c	(working copy)
@@ -14400,7 +14400,7 @@
 				ast_log(LOG_NOTICE, "Sending fake auth rejection for user %s\n", get_header(req, "From"));
 				transmit_fake_auth_response(p, req, 1);
 			} else {
-  				ast_log(LOG_NOTICE, "Failed to authenticate user %s\n", get_header(req, "From"));
+  				ast_log(LOG_NOTICE, "Failed to authenticate user %s, returned %d\n", get_header(req, "From"), res);
 				transmit_response_reliable(p, "403 Forbidden", req);
   			}
 			p->invitestate = INV_COMPLETED;