diff --git a/net/netfilter/xt_tcpmss.c b/net/netfilter/xt_tcpmss.c
index b08b077d7f0a..5f7f97dbace5 100644
--- a/net/netfilter/xt_tcpmss.c
+++ b/net/netfilter/xt_tcpmss.c
@@ -103,6 +103,7 @@ static struct xt_match tcpmss_mt_reg[] __read_mostly = {
 	{
 		.name		= "tcpmss",
 		.family		= NFPROTO_IPV6,
+		.checkentry	= tcpmss_mt_check,
 		.match		= tcpmss_mt,
 		.matchsize	= sizeof(struct xt_tcpmss_match_info),
 		.proto		= IPPROTO_TCP,