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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 6110e0eb..fa3205a1 100644
--- a/extensions/libipt_TTL.c
+++ b/extensions/libipt_TTL.c
@@ -138,7 +138,7 @@ static void print(const void *ip,
printf("%u ", info->ttl);
}
-static struct option opts[] = {
+static const struct option opts[] = {
{ "ttl-set", 1, 0, '1' },
{ "ttl-dec", 1, 0, '2' },
{ "ttl-inc", 1, 0, '3' },