diff --git a/include/linux/netfilter/xt_comment.h b/include/linux/netfilter/xt_comment.h
new file mode 100644
index 0000000..eacfedc
--- /dev/null
+++ b/include/linux/netfilter/xt_comment.h
@@ -0,0 +1,10 @@
+#ifndef _XT_COMMENT_H
+#define _XT_COMMENT_H
+
+#define XT_MAX_COMMENT_LEN 256
+
+struct xt_comment_info {
+	unsigned char comment[XT_MAX_COMMENT_LEN];
+};
+
+#endif /* XT_COMMENT_H */