diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 94eee746a8..67df790c16 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -8712,7 +8712,7 @@ static struct sip_pvt *get_sip_pvt_byid_locked(const char *callid, const char *t
 			   (With a forking SIP proxy, several call legs share the
 			   call id, but have different tags)
 			*/
-			if (pedanticsipchecking && (strcmp(fromtag, sip_pvt_ptr->theirtag) || strcmp(totag, ourtag)))
+			if (pedanticsipchecking && (strcmp(fromtag, sip_pvt_ptr->theirtag) || (!ast_strlen_zero(totag) && strcmp(totag, ourtag))))
 				match = 0;
 
 			if (!match) {