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-rw-r--r--extensions/libipt_ttl.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/extensions/libipt_ttl.c b/extensions/libipt_ttl.c
index 5409deec..f5602f5e 100644
--- a/extensions/libipt_ttl.c
+++ b/extensions/libipt_ttl.c
@@ -143,7 +143,7 @@ static void save(const void *ip,
printf("%u ", info->ttl);
}
-static struct option opts[] = {
+static const struct option opts[] = {
{ "ttl", 1, 0, '2' },
{ "ttl-eq", 1, 0, '2'},
{ "ttl-lt", 1, 0, '3'},