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-rw-r--r--extensions/libxt_length.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/extensions/libxt_length.c b/extensions/libxt_length.c
index 345423d7..46a4ad2c 100644
--- a/extensions/libxt_length.c
+++ b/extensions/libxt_length.c
@@ -20,7 +20,7 @@ IPTABLES_VERSION);
}
-static struct option opts[] = {
+static const struct option opts[] = {
{ "length", 1, 0, '1' },
{0}
};