diff --git a/docs/json-type-definition.md b/docs/json-type-definition.md
index 41f13832d..d12326b34 100644
--- a/docs/json-type-definition.md
+++ b/docs/json-type-definition.md
@@ -416,6 +416,10 @@ Any user-defined keywords that can be used in JSON Schema schemas can also be us
 It is strongly recommended to only use it to simplify migration from JSON Schema to JTD and not to use non-standard keywords in the new schemas, as these keywords are not supported by any other tools.
 :::
 
+::: warning Parsing does NOT support non-standard JTD keywords
+compileParser method does not support non-standard JTD keywords, you will have to use JSON.parse and then validates.
+:::
+
 ## Validation errors
 
 TODO