diff --git a/src/Symfony/Component/Validator/Tests/Constraints/UrlValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/UrlValidatorTest.php
index 5406b354ce..e496245c0a 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/UrlValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/UrlValidatorTest.php
@@ -35,6 +35,13 @@ class UrlValidatorTest extends AbstractConstraintValidatorTest
         $this->assertNoViolation();
     }
 
+    public function testEmptyStringFromObjectIsValid()
+    {
+        $this->validator->validate(new EmailProvider(), new Url());
+
+        $this->assertNoViolation();
+    }
+
     /**
      * @expectedException \Symfony\Component\Validator\Exception\UnexpectedTypeException
      */
@@ -171,3 +178,11 @@ class UrlValidatorTest extends AbstractConstraintValidatorTest
         );
     }
 }
+
+class EmailProvider
+{
+    public function __toString()
+    {
+        return '';
+    }
+}