diff --git a/examples/22-create-rich-text-field-with-validation.js b/examples/22-create-rich-text-field-with-validation.js
index e5e3d0a7..ff8ea017 100644
--- a/examples/22-create-rich-text-field-with-validation.js
+++ b/examples/22-create-rich-text-field-with-validation.js
@@ -47,8 +47,8 @@ module.exports = function (migration) {
         }
       },
       {
-        enabledMarks: ['bold', 'italic', 'underline', 'code', 'superscript', 'subscript'],
-        message: 'Only bold, italic, underline, code, superscript, and subscript marks are allowed'
+        enabledMarks: ['bold', 'italic', 'underline', 'code', 'superscript', 'subscript', 'strikethrough'],
+        message: 'Only bold, italic, underline, code, superscript, subscript and strikethrough marks are allowed'
       },
       {
         enabledNodeTypes: [