diff --git a/src/Symfony/Component/Validator/Validator/LegacyValidator.php b/src/Symfony/Component/Validator/Validator/LegacyValidator.php
index ce3501f216..69da30d545 100644
--- a/src/Symfony/Component/Validator/Validator/LegacyValidator.php
+++ b/src/Symfony/Component/Validator/Validator/LegacyValidator.php
@@ -52,6 +52,8 @@ class LegacyValidator extends RecursiveValidator implements LegacyValidatorInter
             return parent::validate($value, $constraints, $groups);
         }
 
+        trigger_error('ValidatorInterface::validate() was deprecated in version 2.5 and will be removed in version 3.0. Please use Validator\\ValidatorInterface::validate() instead.', E_USER_DEPRECATED);
+
         $constraint = new Valid(array('traverse' => $traverse, 'deep' => $deep));
 
         return parent::validate($value, $constraint, $groups);
@@ -59,6 +61,8 @@ class LegacyValidator extends RecursiveValidator implements LegacyValidatorInter
 
     public function validateValue($value, $constraints, $groups = null)
     {
+        trigger_error('ValidatorInterface::validateValue() was deprecated in version 2.5 and will be removed in version 3.0. Please use Validator\\ValidatorInterface::validate() instead.', E_USER_DEPRECATED);
+
         return parent::validate($value, $constraints, $groups);
     }
 
diff --git a/src/Symfony/Component/Validator/ValidatorInterface.php b/src/Symfony/Component/Validator/ValidatorInterface.php
index 03c8921bb2..d6f3e2628f 100644
--- a/src/Symfony/Component/Validator/ValidatorInterface.php
+++ b/src/Symfony/Component/Validator/ValidatorInterface.php
@@ -11,6 +11,8 @@
 
 namespace Symfony\Component\Validator;
 
+trigger_error('ValidatorInterface was deprecated in version 2.5 and will be removed in version 3.0. Please use Validator\\ValidatorInterface instead.', E_USER_DEPRECATED);
+
 /**
  * Validates values and graphs of objects and arrays.
  *