diff --git a/src/mslookup_server_mdns.c b/src/mslookup_server_mdns.c
index 0e94074..a669526 100644
--- a/src/mslookup_server_mdns.c
+++ b/src/mslookup_server_mdns.c
@@ -71,7 +71,7 @@
 
 	/* Parse the message and print it */
 	n = read(osmo_fd->fd, buffer, sizeof(buffer));
-	if (n < 0)
+	if (n <= 0)
 		return n;
 
 	ctx = talloc_named_const(server, 0, __func__);