diff --git a/core/modules/entity/lib/Drupal/entity/DatabaseStorageController.php b/core/modules/entity/lib/Drupal/entity/DatabaseStorageController.php
index 20e303e..eb9df14 100644
--- a/core/modules/entity/lib/Drupal/entity/DatabaseStorageController.php
+++ b/core/modules/entity/lib/Drupal/entity/DatabaseStorageController.php
@@ -8,6 +8,7 @@
 namespace Drupal\entity;
 
 use PDO;
+use Exception;
 
 /**
  * Defines a base entity controller class.