diff --git a/src/mod/endpoints/mod_sofia/sofia.c b/src/mod/endpoints/mod_sofia/sofia.c
index 2d5c43eafa..7dc4eef1bf 100644
--- a/src/mod/endpoints/mod_sofia/sofia.c
+++ b/src/mod/endpoints/mod_sofia/sofia.c
@@ -2105,6 +2105,7 @@ static void parse_domain_tag(sofia_profile_t *profile, switch_xml_t x_domain_tag
 
 static void parse_rtp_bugs(sofia_profile_t *profile, const char *str)
 {
+
 	if (switch_stristr("clear", str)) {
 		profile->auto_rtp_bugs = 0;
 	}
@@ -2125,11 +2126,11 @@ static void parse_rtp_bugs(sofia_profile_t *profile, const char *str)
 		profile->auto_rtp_bugs &= ~RTP_BUG_SONUS_SEND_INVALID_TIMESTAMP_2833;
 	}
 
-	if (switch_stristr("RTP_BUG_IGNORE_MARK_BIT", str)) {
+	if (switch_stristr("IGNORE_MARK_BIT", str)) {
 		profile->auto_rtp_bugs |= RTP_BUG_IGNORE_MARK_BIT;
 	}	
 
-	if (switch_stristr("~RTP_BUG_IGNORE_MARK_BIT", str)) {
+	if (switch_stristr("~IGNORE_MARK_BIT", str)) {
 		profile->auto_rtp_bugs &= ~RTP_BUG_IGNORE_MARK_BIT;
 	}	
 
diff --git a/src/mod/endpoints/mod_sofia/sofia_glue.c b/src/mod/endpoints/mod_sofia/sofia_glue.c
index 002687884b..751e7d0e48 100644
--- a/src/mod/endpoints/mod_sofia/sofia_glue.c
+++ b/src/mod/endpoints/mod_sofia/sofia_glue.c
@@ -2822,6 +2822,10 @@ switch_status_t sofia_glue_activate_rtp(private_object_t *tech_pvt, switch_rtp_f
 		sofia_set_flag(tech_pvt, TFLAG_RTP);
 		sofia_set_flag(tech_pvt, TFLAG_IO);
 
+		if (tech_pvt->profile->auto_rtp_bugs & RTP_BUG_IGNORE_MARK_BIT) {
+			tech_pvt->rtp_bugs |= RTP_BUG_IGNORE_MARK_BIT;
+		}
+		
 		switch_rtp_intentional_bugs(tech_pvt->rtp_session, tech_pvt->rtp_bugs);
 
 		if ((vad_in && inb) || (vad_out && !inb)) {