diff --git a/openbsc/src/gsm_data.c b/openbsc/src/gsm_data.c
index 3a14f7e..395339e 100644
--- a/openbsc/src/gsm_data.c
+++ b/openbsc/src/gsm_data.c
@@ -574,9 +574,11 @@
 		bts->c0->nominal_power = 23;
 		break;
 	case GSM_BTS_TYPE_BS11:
-	case GSM_BTS_TYPE_RBS2000:
 	case GSM_BTS_TYPE_UNKNOWN:
 		break;
+	case GSM_BTS_TYPE_RBS2000:
+		INIT_LLIST_HEAD(&bts->rbs2000.is.conn_groups);
+		break;
 	}
 
 	return 0;