diff --git a/openbsc/include/openbsc/bsc_msc.h b/openbsc/include/openbsc/bsc_msc.h
index 29ce065d1..ce21bfe43 100644
--- a/openbsc/include/openbsc/bsc_msc.h
+++ b/openbsc/include/openbsc/bsc_msc.h
@@ -29,6 +29,7 @@
 struct bsc_msc_connection {
 	struct write_queue write_queue;
 	int is_connected;
+	int is_authenticated;
 	const char *ip;
 	int port;