diff --git a/reference/constraints/Valid.rst b/reference/constraints/Valid.rst
index c5bb19fa89f..5ccc42bdb29 100644
--- a/reference/constraints/Valid.rst
+++ b/reference/constraints/Valid.rst
@@ -157,7 +157,7 @@ stores an ``Address`` instance in the ``$address`` property::
             {
                 $metadata->addPropertyConstraint('street', new Assert\NotBlank());
                 $metadata->addPropertyConstraint('zipCode', new Assert\NotBlank());
-                $metadata->addPropertyConstraint('zipCode', new Assert\Length(["max" => 5]));
+                $metadata->addPropertyConstraint('zipCode', new Assert\Length(['max' => 5]));
             }
         }
 
@@ -172,7 +172,7 @@ stores an ``Address`` instance in the ``$address`` property::
             public static function loadValidatorMetadata(ClassMetadata $metadata)
             {
                 $metadata->addPropertyConstraint('firstName', new Assert\NotBlank());
-                $metadata->addPropertyConstraint('firstName', new Assert\Length(["min" => 4]));
+                $metadata->addPropertyConstraint('firstName', new Assert\Length(['min' => 4]));
                 $metadata->addPropertyConstraint('lastName', new Assert\NotBlank());
             }
         }