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-rw-r--r--epan/dissectors/packet-isakmp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/epan/dissectors/packet-isakmp.c b/epan/dissectors/packet-isakmp.c
index 86fff4faeb..cfaecc7fcc 100644
--- a/epan/dissectors/packet-isakmp.c
+++ b/epan/dissectors/packet-isakmp.c
@@ -1201,7 +1201,7 @@ dissect_certreq_v2(tvbuff_t *tvb, int offset, int length, proto_tree *tree,
length -= 1;
/* this is a list of 20 byte SHA-1 hashes */
- while (length) {
+ while (length > 0) {
proto_tree_add_item(tree, hf_ike_v2_certificate_authority, tvb, offset, 20, FALSE);
length-=20;
}