diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateImageCacheTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateImageCacheTest.php
index 53a9c9d..7f9ae90 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateImageCacheTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateImageCacheTest.php
@@ -35,8 +35,8 @@ public function setUp() {
     $migration = entity_load('migration', 'd6_imagecache_presets');
 
     $dumps = array(
-      $this->getDumpDirectory() . '/ImagecachePreset',
-      $this->getDumpDirectory() . '/ImagecacheAction',
+      $this->getDumpDirectory() . '/ImagecachePreset.php',
+      $this->getDumpDirectory() . '/ImagecacheAction.php',
     );
 
     $this->prepare($migration, $dumps);