diff --git a/packages/ckeditor5-dev-web-crawler/lib/runcrawler.js b/packages/ckeditor5-dev-web-crawler/lib/runcrawler.js
index ea27f4f13..97c75863a 100644
--- a/packages/ckeditor5-dev-web-crawler/lib/runcrawler.js
+++ b/packages/ckeditor5-dev-web-crawler/lib/runcrawler.js
@@ -561,25 +561,7 @@ function registerErrorHandlers( page, { link, onError } ) {
 			return;
 		}
 
-		const serializeArgumentInPageContext = argument => {
-			// Since errors are not serializable, return the message with the call stack as the output text.
-			if ( argument instanceof Error ) {
-				return argument.stack;
-			}
-
-			// Cast non-string iterable argument to an array.
-			if ( typeof argument !== 'string' && argument[ Symbol.iterator ] ) {
-				return [ ...argument ];
-			}
-
-			// Return argument right away. Since we use `executionContext().evaluate()`, it'll return JSON value of the
-			// argument if possible, or `undefined` if it fails to stringify it.
-			return argument;
-		};
-
-		const serializeArguments = argument => {
-			return argument.evaluate( serializeArgumentInPageContext, argument );
-		};
+		const serializeArguments = argument => argument.jsonValue();
 
 		const serializedArguments = await Promise.all( message.args().map( serializeArguments ) );