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-rw-r--r--extensions/libxt_string.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/extensions/libxt_string.c b/extensions/libxt_string.c
index c58f4814..ea0a2aa4 100644
--- a/extensions/libxt_string.c
+++ b/extensions/libxt_string.c
@@ -44,7 +44,7 @@ help(void)
IPTABLES_VERSION);
}
-static struct option opts[] = {
+static const struct option opts[] = {
{ "from", 1, 0, '1' },
{ "to", 1, 0, '2' },
{ "algo", 1, 0, '3' },