diff --git a/docs/guide/input-validation.md b/docs/guide/input-validation.md
index 6e939dd0f6..5a300dcc0b 100644
--- a/docs/guide/input-validation.md
+++ b/docs/guide/input-validation.md
@@ -544,7 +544,7 @@ class StatusValidator extends Validator
         $statuses = json_encode(Status::find()->select('id')->asArray()->column());
         $message = json_encode($this->message, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE);
         return <<<JS
-if (!$.inArray(value, $statuses)) {
+if ($.inArray(value, $statuses) > -1) {
     messages.push($message);
 }
 JS;