diff --git a/src/isdn/dss1.c b/src/isdn/dss1.c
index 4f46cfe..c43c36f 100644
--- a/src/isdn/dss1.c
+++ b/src/isdn/dss1.c
@@ -840,7 +840,7 @@ void release_complete_ind(call_t *call, uint32_t pid, struct l3_msg *l3m)
 	}
 
 	/* cause */
-	/* in case layer 2 is down during setup, we send cause 27 */
+	/* in case layer 1 is down during setup, we send cause 27 */
 	if (call->state == ISDN_STATE_OUT_SETUP && call->isdn_ep->l1link == 0) {
 		cause = 27;
 		location = call->isdn_ep->serving_location;