diff --git a/openbsc/src/paging.c b/openbsc/src/paging.c
index b63a717..343d710 100644
--- a/openbsc/src/paging.c
+++ b/openbsc/src/paging.c
@@ -245,6 +245,7 @@
 {
 	struct gsm_bts *bts = NULL;
 
+	/* start paging subscriber on all BTS within Location Area */
 	do {
 		bts = gsm_bts_by_lac(network, subscr->lac, bts);
 		if (!bts)