diff --git a/core/modules/block/lib/Drupal/block/Plugin/Type/BlockManager.php b/core/modules/block/lib/Drupal/block/Plugin/Type/BlockManager.php
index f3686d0..9c30cfb 100644
--- a/core/modules/block/lib/Drupal/block/Plugin/Type/BlockManager.php
+++ b/core/modules/block/lib/Drupal/block/Plugin/Type/BlockManager.php
@@ -89,14 +89,23 @@ public function processDefinition(&$definition, $plugin_id) {
   protected function getModuleName($module) {
     // Gather module data.
     if (!isset($this->moduleData)) {
-      $this->moduleData = system_rebuild_module_data();
+      $this->moduleData = system_get_info('module');
     }
     // If the module exists, return its human-readable name.
     if (isset($this->moduleData[$module])) {
-      return $this->translationManager->translate($this->moduleData[$module]->info['name']);
+      return $this->t($this->moduleData[$module]['name']);
     }
     // Otherwise, return the machine name.
     return $module;
   }
 
+  /**
+   * Translates a string to the current language or to a given language.
+   *
+   * See the t() documentation for details.
+   */
+  protected function t($string, array $args = array(), array $options = array()) {
+    return $this->translationManager->translate($string, $args, $options);
+  }
+
 }