4 files changed, 4 insertions, 4 deletions
diff --git a/extensions/libebt_limit.c b/extensions/libebt_limit.c
index 6b9bb16f..988f678a 100644
--- a/extensions/libebt_limit.c
+++ b/extensions/libebt_limit.c
@@ -29,7 +29,7 @@
 #define ARG_LIMIT		'1'
 #define ARG_LIMIT_BURST		'2'
 
-static struct option brlimit_opts[] =
+static const struct option brlimit_opts[] =
 {
 	{ .name = "limit",	.has_arg = true,	.val = ARG_LIMIT },
 	{ .name = "limit-burst",.has_arg = true,	.val = ARG_LIMIT_BURST },
diff --git a/extensions/libebt_mark.c b/extensions/libebt_mark.c
index a1a208c3..7b80b22e 100644
--- a/extensions/libebt_mark.c
+++ b/extensions/libebt_mark.c
@@ -25,7 +25,7 @@ static int mark_supplied;
 #define MARK_ORMARK  '3'
 #define MARK_ANDMARK '4'
 #define MARK_XORMARK '5'
-static struct option brmark_opts[] = {
+static const struct option brmark_opts[] = {
 	{ .name = "mark-target",.has_arg = true,	.val = MARK_TARGET },
 	/* an oldtime messup, we should have always used the scheme
 	 * <extension-name>-<option> */
diff --git a/extensions/libebt_mark_m.c b/extensions/libebt_mark_m.c
index ab9d2344..eb08dbab 100644
--- a/extensions/libebt_mark_m.c
+++ b/extensions/libebt_mark_m.c
@@ -18,7 +18,7 @@
 
 #define MARK '1'
 
-static struct option brmark_m_opts[] = {
+static const struct option brmark_m_opts[] = {
 	{ .name = "mark",	.has_arg = true, .val = MARK },
 	XT_GETOPT_TABLEEND,
 };
diff --git a/extensions/libebt_nflog.c b/extensions/libebt_nflog.c
index fef71960..5f1d13b1 100644
--- a/extensions/libebt_nflog.c
+++ b/extensions/libebt_nflog.c
@@ -30,7 +30,7 @@ enum {
 	NFLOG_NFLOG	= 0x16,
 };
 
-static struct option brnflog_opts[] = {
+static const struct option brnflog_opts[] = {
 	{ .name = "nflog-group",     .has_arg = true,  .val = NFLOG_GROUP},
 	{ .name = "nflog-prefix",    .has_arg = true,  .val = NFLOG_PREFIX},
 	{ .name = "nflog-range",     .has_arg = true,  .val = NFLOG_RANGE},