diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index e9e38d08f9..dc46c66c65 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -1772,8 +1772,7 @@ static struct sip_proxy *proxy_allocate(char *name, char *port, int force)
 		return NULL;
 	proxy->force = force;
 	ast_copy_string(proxy->name, name, sizeof(proxy->name));
-	if (!ast_strlen_zero(port))
-		proxy->ip.sin_port = htons(atoi(port));
+	proxy->ip.sin_port = htons((!ast_strlen_zero(port) ? atoi(port) : STANDARD_SIP_PORT));
 	proxy_update(proxy);
 	return proxy;
 }