---- a/pppd/chap_ms.c
-+++ b/pppd/chap_ms.c
-@@ -852,7 +852,7 @@ ChapMS2(u_char *rchallenge, u_char *Peer
- u_char *p = &response[MS_CHAP2_PEER_CHALLENGE];
- int i;
-
-- BZERO(response, sizeof(*response));
-+ BZERO(response, MS_CHAP2_RESPONSE_LEN);
-
- /* Generate the Peer-Challenge if requested, or copy it if supplied. */
- if (!PeerChallenge)