diff --git a/src/Symfony/Component/Ldap/Exception/AlreadyExistsException.php b/src/Symfony/Component/Ldap/Exception/AlreadyExistsException.php
index 51635037ac..8ab7d5e6e8 100644
--- a/src/Symfony/Component/Ldap/Exception/AlreadyExistsException.php
+++ b/src/Symfony/Component/Ldap/Exception/AlreadyExistsException.php
@@ -16,6 +16,6 @@ namespace Symfony\Component\Ldap\Exception;
  *
  * @author Hamza Amrouche <hamza.simperfit@gmail.com>
  */
-class AlreadyExistsException extends ConnectionException implements ExceptionInterface
+class AlreadyExistsException extends ConnectionException
 {
 }
diff --git a/src/Symfony/Component/Ldap/Exception/ConnectionTimeoutException.php b/src/Symfony/Component/Ldap/Exception/ConnectionTimeoutException.php
index 41533412dd..bd60be7f63 100644
--- a/src/Symfony/Component/Ldap/Exception/ConnectionTimeoutException.php
+++ b/src/Symfony/Component/Ldap/Exception/ConnectionTimeoutException.php
@@ -12,10 +12,10 @@
 namespace Symfony\Component\Ldap\Exception;
 
 /**
- * ConnectionException is thrown if binding to ldap time out.
+ * ConnectionTimeoutException is thrown if binding to ldap time out.
  *
  * @author Hamza Amrouche <hamza.simperfit@gmail.com>
  */
-class ConnectionTimeoutException extends ConnectionException implements ExceptionInterface
+class ConnectionTimeoutException extends ConnectionException
 {
 }
diff --git a/src/Symfony/Component/Ldap/Exception/InvalidCredentialsException.php b/src/Symfony/Component/Ldap/Exception/InvalidCredentialsException.php
index b5cffce9e9..74e77094c8 100644
--- a/src/Symfony/Component/Ldap/Exception/InvalidCredentialsException.php
+++ b/src/Symfony/Component/Ldap/Exception/InvalidCredentialsException.php
@@ -12,10 +12,10 @@
 namespace Symfony\Component\Ldap\Exception;
 
 /**
- * ConnectionException is thrown if binding to ldap has been done with invalid credentials .
+ * InvalidCredentialsException is thrown if binding to ldap has been done with invalid credentials.
  *
  * @author Hamza Amrouche <hamza.simperfit@gmail.com>
  */
-class InvalidCredentialsException extends ConnectionException implements ExceptionInterface
+class InvalidCredentialsException extends ConnectionException
 {
 }