diff --git a/avserver.c b/avserver.c
index d0a14aa5654c609e169fbc45380890bbc7f7b2ef..7b8bf1397a094656852ded96fc199599dfd4a25a 100644
--- a/avserver.c
+++ b/avserver.c
@@ -522,6 +522,7 @@ static int socket_open_listen(struct sockaddr_in *my_addr)
     tmp = 1;
     setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR, &tmp, sizeof(tmp));
 
+    my_addr->sin_family = AF_INET;
     if (bind (server_fd, (struct sockaddr *) my_addr, sizeof (*my_addr)) < 0) {
         char bindmsg[32];
         snprintf(bindmsg, sizeof(bindmsg), "bind(port %d)", ntohs(my_addr->sin_port));