diff --git a/docs/api.md b/docs/api.md
index f182ee58c7c..129eca092b8 100644
--- a/docs/api.md
+++ b/docs/api.md
@@ -1686,7 +1686,7 @@ Returns a JSON representation of the object. If the object has a
 [`toJSON`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify#toJSON()_behavior)
 function, it **will not be called**.
 
-> **NOTE** The method will throw if the referenced object is not stringifiable.
+> **NOTE** The method will return an empty JSON if the referenced object is not stringifiable. It will throw an error if the object has circular references.
 
 ### class: ElementHandle