diff --git a/data/xap/xap_0.1.0.hjson b/data/xap/xap_0.1.0.hjson
index 932d6d09a03..682e5325f47 100755
--- a/data/xap/xap_0.1.0.hjson
+++ b/data/xap/xap_0.1.0.hjson
@@ -13,7 +13,9 @@
             * `0xFFFE`: A message sent by a host application may use this token if no response is to be sent -- a "fire and forget" message.
             * `0xFFFF`: Signifies a "broadcast" message sent by the firmware without prompting from the host application. Broadcast messages are defined later in this document.
 
-            Any request will generate at least one corresponding response, with the exception of messages using reserved tokens. Maximum total message length is 128 bytes due to RAM constraints.
+            When not using reserved tokens above, requests will always generate one corresponding response with a matching token.
+
+            Maximum total message length is 64 bytes - a single HID report size, no fragmentation or reassembly needed.
             '''
 
         broadcast_messages: