diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 3d60215..1ce6b60 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -626,7 +626,7 @@
 		connected = 0;
 	}
 
-	if (MULTICAST(daddr)) {
+	if (ipv4_is_multicast(daddr)) {
 		if (!ipc.oif)
 			ipc.oif = inet->mc_index;
 		if (!saddr)