diff -u b/core/modules/system/src/Form/ModulesListForm.php b/core/modules/system/src/Form/ModulesListForm.php
--- b/core/modules/system/src/Form/ModulesListForm.php
+++ b/core/modules/system/src/Form/ModulesListForm.php
@@ -331,7 +331,6 @@
     // Present a checkbox for installing and indicating the status of a module.
     $row['enable'] = array(
       '#type' => 'checkbox',
-      '#wrapper_attributes' => ['class' => ['checkbox']],
       '#default_value' => (bool) $module->status,
       '#disabled' => (bool) $module->status,
     );