diff --git a/01.md b/01.md
index 55adb8d0..1df538a2 100644
--- a/01.md
+++ b/01.md
@@ -117,8 +117,8 @@ To open, update, and close subscriptions, Clients MUST use the following formats
 ```json
 {
   "ids": [<id1>, <id2>, ...],
-  "authors": [pubkey1, pubkey2, ...],
-  "kinds": [kind1, kind2, ...],
+  "authors": [<pubkey1>, <pubkey2>, ...],
+  "kinds": [<kind1>, <kind2>, ...],
   "#<single-letter-tag-key (a-zA-Z)>": [tag value1, tag value2, ...], 
   "since": <an integer unix timestamp in seconds, events must be newer than this to pass>,
   "until": <an integer unix timestamp in seconds, events must be older than this to pass>,