diff --git a/PluginManager.php b/PluginManager.php
index 5b8d1c9..98113a9 100644
--- a/PluginManager.php
+++ b/PluginManager.php
@@ -75,7 +75,7 @@ public function uninstall(array $meta, ContainerInterface $container)
      *
      * @throws \Exception
      */
-    public function enable(array $meta = null, ContainerInterface $container)
+    public function enable(array $meta, ContainerInterface $container)
     {
         $entityManager = $container->get('doctrine')->getManager();
         $this->copyBlock($container);
@@ -90,7 +90,7 @@ public function enable(array $meta = null, ContainerInterface $container)
      * @param array|null $meta
      * @param ContainerInterface $container
      */
-    public function disable(array $meta = null, ContainerInterface $container)
+    public function disable(array $meta, ContainerInterface $container)
     {
         $this->removeDataBlock($container);
     }
@@ -99,7 +99,7 @@ public function disable(array $meta = null, ContainerInterface $container)
      * @param array|null $meta
      * @param ContainerInterface $container
      */
-    public function update(array $meta = null, ContainerInterface $container)
+    public function update(array $meta, ContainerInterface $container)
     {
         $this->copyBlock($container);
     }