1 files changed, 3 insertions, 2 deletions

diff --git a/ssh-pkcs11-helper.c b/ssh-pkcs11-helper.c
index 39b2e7c56..b7c52beb8 100644
--- a/ssh-pkcs11-helper.c
+++ b/ssh-pkcs11-helper.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssh-pkcs11-helper.c,v 1.6 2013/05/17 00:13:14 djm Exp $ */
+/* $OpenBSD: ssh-pkcs11-helper.c,v 1.7 2013/12/02 02:56:17 djm Exp $ */
 /*
  * Copyright (c) 2010 Markus Friedl.  All rights reserved.
  *
@@ -127,7 +127,8 @@ process_add(void)
                 buffer_put_char(&msg, SSH2_AGENT_IDENTITIES_ANSWER);
                 buffer_put_int(&msg, nkeys);
                 for (i = 0; i < nkeys; i++) {
-                        key_to_blob(keys[i], &blob, &blen);
+                        if (key_to_blob(keys[i], &blob, &blen) == 0)
+                                continue;
                         buffer_put_string(&msg, blob, blen);
                         buffer_put_cstring(&msg, name);
                         free(blob);