diff --git a/components/validator.rst b/components/validator.rst
index 59afb7f963d..7da44454893 100644
--- a/components/validator.rst
+++ b/components/validator.rst
@@ -60,7 +60,7 @@ If you have lots of validation errors, you can filter them by error code::
     use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity;
 
     $violations = $validator->validate(...);
-    if (count($violations->findByCodes(UniqueEntity::NOT_UNIQUE_ERROR))) {
+    if (0 !== count($violations->findByCodes(UniqueEntity::NOT_UNIQUE_ERROR))) {
         // handle this specific error (display some message, send an email, etc.)
     }