diff --git a/openbsc/src/osmo-bsc_nat/bsc_nat.c b/openbsc/src/osmo-bsc_nat/bsc_nat.c
index 2b62ea6..7586294 100644
--- a/openbsc/src/osmo-bsc_nat/bsc_nat.c
+++ b/openbsc/src/osmo-bsc_nat/bsc_nat.c
@@ -1365,7 +1365,7 @@
 
 	/* wait for the BSC */
 	rc = make_sock(&bsc_listen, IPPROTO_TCP, ntohl(local_addr.s_addr),
-		       5000, ipaccess_listen_bsc_cb);
+		       5000, 0, ipaccess_listen_bsc_cb, nat);
 	if (rc != 0) {
 		fprintf(stderr, "Failed to listen for BSC.\n");
 		exit(1);