diff --git a/openbsc/src/gsm_data.c b/openbsc/src/gsm_data.c
index dc8024a..a4a5b20 100644
--- a/openbsc/src/gsm_data.c
+++ b/openbsc/src/gsm_data.c
@@ -318,6 +318,7 @@
 	net->msc_data->ping_timeout = 20;
 	net->msc_data->pong_timeout = 5;
 	net->msc_data->core_ncc = -1;
+	net->msc_data->core_mcc = -1;
 	net->msc_data->rtp_payload = 126;
 	net->msc_data->rtp_base = 4000;