diff --git a/src/mod/endpoints/mod_sofia/mod_sofia.c b/src/mod/endpoints/mod_sofia/mod_sofia.c
index bfba4e5af5..e96e41731f 100644
--- a/src/mod/endpoints/mod_sofia/mod_sofia.c
+++ b/src/mod/endpoints/mod_sofia/mod_sofia.c
@@ -280,7 +280,7 @@ switch_status_t sofia_on_hangup(switch_core_session_t *session)
 	if (tech_pvt->nh  && !switch_test_flag(tech_pvt, TFLAG_BYE)) {
 		if (switch_test_flag(tech_pvt, TFLAG_ANS)) {
             char reason[128] = "";
-            if (cause < 128) {
+            if (cause > 1 && cause < 128) {
                 switch_snprintf(reason, sizeof(reason), "Q.850;cause=%d;text=\"%s\"", cause, switch_channel_cause2str(cause));
             } else {
                 switch_snprintf(reason, sizeof(reason), "FreeSWITCH;cause=%d;text=\"%s\"", cause, switch_channel_cause2str(cause));