diff --git a/src/Symfony/Component/Lock/Store/ZookeeperStore.php b/src/Symfony/Component/Lock/Store/ZookeeperStore.php
index 4f8b4ee374e86..030289992144d 100644
--- a/src/Symfony/Component/Lock/Store/ZookeeperStore.php
+++ b/src/Symfony/Component/Lock/Store/ZookeeperStore.php
@@ -91,7 +91,7 @@ public function waitAndSave(Key $key)
      */
     public function putOffExpiration(Key $key, $ttl)
     {
-        throw new NotSupportedException();
+        // do nothing, zookeeper locks forever.
     }
 
     /**
diff --git a/src/Symfony/Component/Lock/StoreInterface.php b/src/Symfony/Component/Lock/StoreInterface.php
index 519c3e4731aa2..e5a1dfa58870c 100644
--- a/src/Symfony/Component/Lock/StoreInterface.php
+++ b/src/Symfony/Component/Lock/StoreInterface.php
@@ -49,7 +49,6 @@ public function waitAndSave(Key $key);
      * @param float $ttl amount of seconds to keep the lock in the store
      *
      * @throws LockConflictedException
-     * @throws NotSupportedException
      */
     public function putOffExpiration(Key $key, $ttl);