diff --git a/include/uapi/linux/netfilter/nf_tables.h b/include/uapi/linux/netfilter/nf_tables.h
index 40d900537..f93ffb1b6 100755
--- a/include/uapi/linux/netfilter/nf_tables.h
+++ b/include/uapi/linux/netfilter/nf_tables.h
@@ -1284,7 +1284,7 @@ enum nft_secmark_attributes {
 #define NFTA_SECMARK_MAX	(__NFTA_SECMARK_MAX - 1)
 
 /* Max security context length */
-#define NFT_SECMARK_CTX_MAXLEN		4096
+#define NFT_SECMARK_CTX_MAXLEN		256
 
 /**
  * enum nft_reject_types - nf_tables reject expression reject types