diff --git a/openbsc/src/libbsc/bsc_subscriber.c b/openbsc/src/libbsc/bsc_subscriber.c
index a5e40cd..73e61e8 100644
--- a/openbsc/src/libbsc/bsc_subscriber.c
+++ b/openbsc/src/libbsc/bsc_subscriber.c
@@ -80,7 +80,7 @@
 {
 	if (!bsub)
 		return;
-	strncpy(bsub->imsi, imsi, sizeof(bsub->imsi));
+	osmo_strlcpy(bsub->imsi, imsi, sizeof(bsub->imsi));
 }
 
 struct bsc_subscr *bsc_subscr_find_or_create_by_imsi(struct llist_head *list,