diff --git a/packages/ckeditor5-dev-web-crawler/lib/runcrawler.js b/packages/ckeditor5-dev-web-crawler/lib/runcrawler.js
index bb293c9a1..ea27f4f13 100644
--- a/packages/ckeditor5-dev-web-crawler/lib/runcrawler.js
+++ b/packages/ckeditor5-dev-web-crawler/lib/runcrawler.js
@@ -577,9 +577,9 @@ function registerErrorHandlers( page, { link, onError } ) {
 			return argument;
 		};
 
-		const serializeArguments = argument => argument
-			.executionContext()
-			.evaluate( serializeArgumentInPageContext, argument );
+		const serializeArguments = argument => {
+			return argument.evaluate( serializeArgumentInPageContext, argument );
+		};
 
 		const serializedArguments = await Promise.all( message.args().map( serializeArguments ) );