diff --git a/channels/chan_iax2.c b/channels/chan_iax2.c
index d186da94a8..d113a89ac9 100644
--- a/channels/chan_iax2.c
+++ b/channels/chan_iax2.c
@@ -8089,6 +8089,7 @@ static int peer_set_srcaddr(struct iax2_peer *peer, const char *srcaddr)
 		int res;
 
 		sin.sin_port = 0;
+		sin.sin_family = AF_INET;
 		res = check_srcaddr((struct sockaddr *) &sin, sizeof(sin));
 		if (res == 0) {
 			/* ip address valid. */