diff --git a/config/action.d/nftables.conf b/config/action.d/nftables.conf
index 77cf3661..b2bb9ec1 100644
--- a/config/action.d/nftables.conf
+++ b/config/action.d/nftables.conf
@@ -55,7 +55,7 @@ _nft_for_proto-multiport-done = done
 _nft_list = <nftables> -a list chain <table_family> <table> <chain>
 _nft_get_handle_id = grep -oP '@<addr_set>\s+.*\s+\Khandle\s+(\d+)$'
 
-_nft_add_set = <nftables> add set <table_family> <table> <addr_set> \{ type <addr_type>\; \}
+_nft_add_set = <nftables> add set <table_family> <table> <addr_set> \{ type <addr_type>\; flags interval\; \}
               <_nft_for_proto-<type>-iter>
               <nftables> add rule <table_family> <table> <chain> %(rule_stat)s
               <_nft_for_proto-<type>-done>