diff --git a/core/modules/migrate/lib/Drupal/migrate/Plugin/MigratePluginManager.php b/core/modules/migrate/lib/Drupal/migrate/Plugin/MigratePluginManager.php
index 783bd39..14692cd 100644
--- a/core/modules/migrate/lib/Drupal/migrate/Plugin/MigratePluginManager.php
+++ b/core/modules/migrate/lib/Drupal/migrate/Plugin/MigratePluginManager.php
@@ -50,7 +50,7 @@ public function __construct($type, \Traversable $namespaces, CacheBackendInterfa
    * A specific createInstance method is necessary to pass the migration on.
    */
   public function createInstance($plugin_id, array $configuration = array(), MigrationInterface $migration = NULL) {
-    $plugin_definition = $this->discovery->getDefinition($plugin_id);
+    $plugin_definition = $this->getDefinition($plugin_id);
     $plugin_class = DefaultFactory::getPluginClass($plugin_id, $plugin_definition);
     // If the plugin provides a factory method, pass the container to it.
     if (is_subclass_of($plugin_class, 'Drupal\Core\Plugin\ContainerFactoryPluginInterface')) {