diff --git a/core/scripts/run-tests.sh b/core/scripts/run-tests.sh
index 1f09534..e5158b5 100755
--- a/core/scripts/run-tests.sh
+++ b/core/scripts/run-tests.sh
@@ -64,7 +64,7 @@
   exit;
 }
 
-$test_list = simpletest_script_get_test_list();
+$test_list = array_fill(0, 100, 'Drupal\image\Tests\ImageStylesPathAndUrlTest');
 
 // Try to allocate unlimited time to run the tests.
 drupal_set_time_limit(0);