diff --git a/src/mod/endpoints/mod_sofia/mod_sofia.h b/src/mod/endpoints/mod_sofia/mod_sofia.h
index 8c88d1ed07..6a395057f8 100644
--- a/src/mod/endpoints/mod_sofia/mod_sofia.h
+++ b/src/mod/endpoints/mod_sofia/mod_sofia.h
@@ -274,6 +274,7 @@ struct sofia_gateway {
 	char *register_contact;
 	char *register_to;
 	char *register_proxy;
+	char *register_sticky_proxy;
 	char *register_context;
 	char *expires_str;
 	char *register_url;
diff --git a/src/mod/endpoints/mod_sofia/sofia.c b/src/mod/endpoints/mod_sofia/sofia.c
index 118742d51a..7aa3673069 100644
--- a/src/mod/endpoints/mod_sofia/sofia.c
+++ b/src/mod/endpoints/mod_sofia/sofia.c
@@ -886,8 +886,8 @@ static void parse_gateways(sofia_profile_t *profile, switch_xml_t gateways_tag)
 				from_domain = realm;
 			}
 
-			if (switch_strlen_zero(register_proxy)) {
-				register_proxy = proxy;
+			if (!switch_strlen_zero(register_proxy)) {
+				gateway->register_sticky_proxy = switch_core_strdup(gateway->pool, register_proxy);
 			}
 
 			gateway->retry_seconds = atoi(retry_seconds);
@@ -914,7 +914,7 @@ static void parse_gateways(sofia_profile_t *profile, switch_xml_t gateways_tag)
 				params = switch_core_sprintf(gateway->pool, ";transport=%s", register_transport);
 			}
 
-			gateway->register_url = switch_core_sprintf(gateway->pool, "sip:%s;transport=%s", register_proxy, register_transport);
+			gateway->register_url = switch_core_sprintf(gateway->pool, "sip:%s;transport=%s", proxy, register_transport);
 			gateway->register_from = switch_core_sprintf(gateway->pool, "<sip:%s@%s;transport=%s>", from_user, from_domain, register_transport);
 
 			sipip = profile->extsipip ?  profile->extsipip : profile->sipip;
diff --git a/src/mod/endpoints/mod_sofia/sofia_reg.c b/src/mod/endpoints/mod_sofia/sofia_reg.c
index 767ec34afe..ca741c089e 100644
--- a/src/mod/endpoints/mod_sofia/sofia_reg.c
+++ b/src/mod/endpoints/mod_sofia/sofia_reg.c
@@ -150,6 +150,7 @@ void sofia_reg_check_gateway(sofia_profile_t *profile, time_t now)
 				if (now) {
 					nua_register(gateway_ptr->nh,
 								 NUTAG_URL(gateway_ptr->register_url),
+								 TAG_IF(gateway_ptr->register_sticky_proxy, NUTAG_PROXY(gateway_ptr->register_sticky_proxy)),
 								 SIPTAG_TO_STR(gateway_ptr->register_from),
 								 SIPTAG_FROM_STR(gateway_ptr->register_from),
 								 SIPTAG_CONTACT_STR(gateway_ptr->register_contact),