diff --git a/modules/field_ui/field_ui.test b/modules/field_ui/field_ui.test
index 77f79ce..474b5a7 100644
--- a/modules/field_ui/field_ui.test
+++ b/modules/field_ui/field_ui.test
@@ -10,8 +10,10 @@
  */
 class FieldUITestCase extends DrupalWebTestCase {
 
-  function setUp($modules = array()) {
-    array_unshift($modules, 'field_test');
+  function setUp() {
+    $modules = func_get_args();
+    $modules = (isset($modules[0]) && is_array($modules[0]) ? $modules[0] : $modules);
+    $modules[] = 'field_test';
     parent::setUp($modules);
 
     // Create test user.