diff --git a/src/mod/endpoints/mod_sofia/sofia.c b/src/mod/endpoints/mod_sofia/sofia.c
index 48f3585a37..7af8a41362 100644
--- a/src/mod/endpoints/mod_sofia/sofia.c
+++ b/src/mod/endpoints/mod_sofia/sofia.c
@@ -924,9 +924,9 @@ static void parse_gateways(sofia_profile_t *profile, switch_xml_t gateways_tag)
 			register_transport = (char *) sofia_glue_transport2str(gateway->register_transport);
 			if (contact_params) {
 				if (*contact_params == ';') {
-					params = switch_core_sprintf(gateway->pool, "%s&transport=%s", contact_params, register_transport);
+					params = switch_core_sprintf(gateway->pool, "%s;transport=%s", contact_params, register_transport);
 				} else {
-					params = switch_core_sprintf(gateway->pool, ";%s&transport=%s", contact_params, register_transport);
+					params = switch_core_sprintf(gateway->pool, ";%s;transport=%s", contact_params, register_transport);
 				}
 			} else {
 				params = switch_core_sprintf(gateway->pool, ";transport=%s", register_transport);