diff --git a/src/Symfony/Component/Validator/Constraints/Count.php b/src/Symfony/Component/Validator/Constraints/Count.php
index 8de10edfc8..b11f994f58 100644
--- a/src/Symfony/Component/Validator/Constraints/Count.php
+++ b/src/Symfony/Component/Validator/Constraints/Count.php
@@ -43,6 +43,9 @@ class Count extends Constraint
                 'min' => $options,
                 'max' => $options,
             ];
+        } elseif (\is_array($options) && isset($options['value']) && !isset($options['min']) && !isset($options['max'])) {
+            $options['min'] = $options['max'] = $options['value'];
+            unset($options['value']);
         }
 
         parent::__construct($options);
diff --git a/src/Symfony/Component/Validator/Constraints/Length.php b/src/Symfony/Component/Validator/Constraints/Length.php
index 79aa473204..996a1e479f 100644
--- a/src/Symfony/Component/Validator/Constraints/Length.php
+++ b/src/Symfony/Component/Validator/Constraints/Length.php
@@ -47,6 +47,9 @@ class Length extends Constraint
                 'min' => $options,
                 'max' => $options,
             ];
+        } elseif (\is_array($options) && isset($options['value']) && !isset($options['min']) && !isset($options['max'])) {
+            $options['min'] = $options['max'] = $options['value'];
+            unset($options['value']);
         }
 
         parent::__construct($options);
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/CountValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/CountValidatorTest.php
index 8416136fd4..01e23cc3b9 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/CountValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/CountValidatorTest.php
@@ -195,4 +195,13 @@ abstract class CountValidatorTest extends ConstraintValidatorTestCase
         $this->assertEquals(5, $constraint->min);
         $this->assertEquals(5, $constraint->max);
     }
+
+    public function testConstraintAnnotationDefaultOption()
+    {
+        $constraint = new Count(['value' => 5, 'exactMessage' => 'message']);
+
+        $this->assertEquals(5, $constraint->min);
+        $this->assertEquals(5, $constraint->max);
+        $this->assertEquals('message', $constraint->exactMessage);
+    }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/LengthValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/LengthValidatorTest.php
index 955d8b5564..f1daee534a 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/LengthValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/LengthValidatorTest.php
@@ -237,11 +237,20 @@ class LengthValidatorTest extends ConstraintValidatorTestCase
         }
     }
 
-    public function testConstraintGetDefaultOption()
+    public function testConstraintDefaultOption()
     {
         $constraint = new Length(5);
 
         $this->assertEquals(5, $constraint->min);
         $this->assertEquals(5, $constraint->max);
     }
+
+    public function testConstraintAnnotationDefaultOption()
+    {
+        $constraint = new Length(['value' => 5, 'exactMessage' => 'message']);
+
+        $this->assertEquals(5, $constraint->min);
+        $this->assertEquals(5, $constraint->max);
+        $this->assertEquals('message', $constraint->exactMessage);
+    }
 }