diff --git a/examples/vue/yup/src/App.vue b/examples/vue/yup/src/App.vue
index 4050e4cdf..44b30fb00 100644
--- a/examples/vue/yup/src/App.vue
+++ b/examples/vue/yup/src/App.vue
@@ -23,7 +23,7 @@ const onChangeFirstName = yup
   .string()
   .test('no-error', "No 'error' allowed in first name", async (value) => {
     await new Promise((resolve) => setTimeout(resolve, 1000))
-    return !value.includes('error')
+    return !value?.includes('error')
   })
 </script>