diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index aaf0b6d51dad476aea77c3ee66ae525349cac8b3..e1c391efc3895b3783db2bd3606552e0fb39d3ee 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -13447,7 +13447,7 @@ static enum sip_result add_sdp(struct sip_request *resp, struct sip_pvt *p, int
 
 		ast_str_append(&m_modem, 0, "m=image %d udptl t38\r\n", ast_sockaddr_port(&udptldest));
 
-		if (ast_sockaddr_cmp(&udptldest, &dest)) {
+		if (ast_sockaddr_cmp_addr(&udptldest, &dest)) {
 			ast_str_append(&m_modem, 0, "c=IN %s %s\r\n",
 					(ast_sockaddr_is_ipv6(&udptldest) && !ast_sockaddr_is_ipv4_mapped(&udptldest)) ?
 					"IP6" : "IP4", ast_sockaddr_stringify_addr_remote(&udptldest));