diff --git a/ping-payload-extensions/extensions/type-0.md b/ping-payload-extensions/extensions/type-0.md
index efa7b6a..acae9b3 100644
--- a/ping-payload-extensions/extensions/type-0.md
+++ b/ping-payload-extensions/extensions/type-0.md
@@ -1,7 +1,7 @@
 # Client Info and Capabilities Payload
 
 ## Client Info 
-Client info are ASCII hex encoded strings.
+Client info are UTF-8 hex encoded strings.
 
 Client info strings consist of 4 parts
 - client name (e.x. `trin`,`fluffy`)
diff --git a/ping-payload-extensions/extensions/type-65535.md b/ping-payload-extensions/extensions/type-65535.md
index b34a722..2571780 100644
--- a/ping-payload-extensions/extensions/type-65535.md
+++ b/ping-payload-extensions/extensions/type-65535.md
@@ -5,7 +5,7 @@ If the ping receiver can't handle the ping for any reason the pong should return
 Pong payload
 ```python
 
-# Max ASCII hex encoded strings length
+# Max UTF-8 hex encoded strings length
 MAX_ERROR_BYTE_LENGTH = 300
 
 error_payload = SSZ.serialize(Container(error_code: u16, message: ByteList[MAX_ERROR_BYTE_LENGTH]))