diff --git a/addons/web_editor/static/src/js/editor/odoo-editor/test/utils.js b/addons/web_editor/static/src/js/editor/odoo-editor/test/utils.js
index 388fd9035d8..e79d79910a8 100644
--- a/addons/web_editor/static/src/js/editor/odoo-editor/test/utils.js
+++ b/addons/web_editor/static/src/js/editor/odoo-editor/test/utils.js
@@ -277,7 +277,7 @@ export function customErrorMessage(assertLocation, value, expected) {
     value = value.replaceAll('\u0009', tab);
     expected = expected.replaceAll('\u0009', tab);
 
-    return `[${assertLocation}]\nactual  : '${value}'\nexpected: '${expected}'\n\nStackTrace `;
+    return `${(isMobileTest ? '[MOBILE VERSION: ' : '[')}${assertLocation}]\nactual  : '${value}'\nexpected: '${expected}'\n\nStackTrace `;
 }
 
 /**