diff --git a/contrib/check-config.sh b/contrib/check-config.sh
index 88eb8aa753..fcbd874ff2 100755
--- a/contrib/check-config.sh
+++ b/contrib/check-config.sh
@@ -265,8 +265,11 @@ flags=(
 	CGROUP_HUGETLB
 	NET_CLS_CGROUP $netprio
 	CFS_BANDWIDTH FAIR_GROUP_SCHED RT_GROUP_SCHED
+	IP_NF_TARGET_REDIRECT
 	IP_VS
 	IP_VS_NFCT
+	IP_VS_PROTO_TCP
+	IP_VS_PROTO_UDP
  	IP_VS_RR
 )
 check_flags "${flags[@]}"