diff --git a/01.md b/01.md
index c1e37480..905e45f7 100644
--- a/01.md
+++ b/01.md
@@ -147,7 +147,7 @@ The `limit` property of a filter is only valid for the initial query and MUST be
 
 ### From relay to client: sending events and notices
 
-Relays can send 4 types of messages, which must also be JSON arrays, according to the following patterns:
+Relays can send 5 types of messages, which must also be JSON arrays, according to the following patterns:
 
   * `["EVENT", <subscription_id>, <event JSON as defined above>]`, used to send events requested by clients.
   * `["OK", <event_id>, <true|false>, <message>]`, used to indicate acceptance or denial of an `EVENT` message.