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-rw-r--r--extensions/libxt_tcp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/extensions/libxt_tcp.c b/extensions/libxt_tcp.c
index da4922b..e5db637 100644
--- a/extensions/libxt_tcp.c
+++ b/extensions/libxt_tcp.c
@@ -27,7 +27,7 @@ help(void)
IPTABLES_VERSION);
}
-static struct option opts[] = {
+static const struct option opts[] = {
{ "source-port", 1, 0, '1' },
{ "sport", 1, 0, '1' }, /* synonym */
{ "destination-port", 1, 0, '2' },