diff -u b/modules/locale/locale.test b/modules/locale/locale.test
--- b/modules/locale/locale.test
+++ b/modules/locale/locale.test
@@ -3137,7 +3137,7 @@
     $this->drupalGet('');
     $query_string = '?' . variable_get('css_js_query_string', '0');
-    $this->assertRaw('@import url("' . $base_url . '/modules/system/system.base.css' . $query_string . '");' . "\n" . '@import url("' . $base_url . '/modules/system/system.base-rtl.css' . $query_string . '");' . "\n", t('CSS: system.base-rtl.css is added directly after system.base.css.'));
-    $this->assertRaw('@import url("' . $base_url . '/modules/system/system.menus.css' . $query_string . '");' . "\n" . '@import url("' . $base_url . '/modules/system/system.menus-rtl.css' . $query_string . '");' . "\n", t('CSS: system.menus-rtl.css is added directly after system.menus.css.'));
-    $this->assertRaw('@import url("' . $base_url . '/modules/system/system.messages.css' . $query_string . '");' . "\n" . '@import url("' . $base_url . '/modules/system/system.messages-rtl.css' . $query_string . '");' . "\n", t('CSS: system.messages-rtl.css is added directly after system.messages.css.'));
+    $this->assertRaw('@import url("' . $base_url . '/modules/system/system.base.css' . $query_string . '");' . "\n" . '@import url("' . $base_url . '/modules/system/system.base-rtl.css' . $query_string . '");' . "\n", 'CSS: system.base-rtl.css is added directly after system.base.css.');
+    $this->assertRaw('@import url("' . $base_url . '/modules/system/system.menus.css' . $query_string . '");' . "\n" . '@import url("' . $base_url . '/modules/system/system.menus-rtl.css' . $query_string . '");' . "\n", 'CSS: system.menus-rtl.css is added directly after system.menus.css.');
+    $this->assertRaw('@import url("' . $base_url . '/modules/system/system.messages.css' . $query_string . '");' . "\n" . '@import url("' . $base_url . '/modules/system/system.messages-rtl.css' . $query_string . '");' . "\n", 'CSS: system.messages-rtl.css is added directly after system.messages.css.');
   }
 }