diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
index 152cd46915d6..1d59a109417d 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -439,6 +439,7 @@ struct nft_set_type {
  *	@expr: stateful expression
  * 	@ops: set ops
  * 	@flags: set flags
+ *	@dead: set will be freed, never cleared
  *	@genmask: generation mask
  * 	@klen: key length
  * 	@dlen: data length