diff --git a/src/mod/endpoints/mod_sofia/sofia_glue.c b/src/mod/endpoints/mod_sofia/sofia_glue.c
index 105236cdbd..15b6eb0eeb 100644
--- a/src/mod/endpoints/mod_sofia/sofia_glue.c
+++ b/src/mod/endpoints/mod_sofia/sofia_glue.c
@@ -486,6 +486,10 @@ void sofia_glue_set_local_sdp(private_object_t *tech_pvt, const char *ip, switch
 		tech_pvt->session_id = tech_pvt->owner_id;
 	}
 
+	if (switch_true(switch_channel_get_variable_dup(tech_pvt->channel, "drop_dtmf", SWITCH_FALSE, -1))) {
+		sofia_set_flag(tech_pvt, TFLAG_DROP_DTMF);
+	}
+
 	tech_pvt->session_id++;
 
 	if ((tech_pvt->profile->ndlb & PFLAG_NDLB_SENDRECV_IN_SESSION) ||
@@ -969,10 +973,6 @@ void sofia_glue_attach_private(switch_core_session_t *session, sofia_profile_t *
 
 	switch_core_session_set_private(session, tech_pvt);
 
-	if (switch_true(switch_channel_get_variable_dup(tech_pvt->channel, "drop_dtmf", SWITCH_FALSE, -1))) {
-		sofia_set_flag(tech_pvt, TFLAG_DROP_DTMF);
-	}
-
 
 	if (channame) {
 		sofia_glue_set_name(tech_pvt, channame);