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
@@ -210,7 +210,7 @@
         '#open' => TRUE,
         // Ensure that the "Core" package comes first.
         '#weight' => $package == 'Core' ? -10 : NULL,
-        '#attributes' => array('class' => array('package-listing')),
+        '#attributes' => ['class' => ['package-listing']],
         'table' => $table,
       );
     }
@@ -263,7 +263,7 @@
           '#options' => array(
             'attributes' => array(
               'id' => 'edit-modules-core-' . $module->getName() . '-links-help',
-              'class' => array('module-link', 'module-link-help'),
+              'class' => ['module-link', 'module-link-help'],
               'title' => $this->t('Help'),
             ),
           ),
@@ -322,7 +322,7 @@
     // Present a checkbox for installing and indicating the status of a module.
     $row['enable'] = array(
       '#type' => 'checkbox',
-      '#wrapper_attributes' => array('class' => array('checkbox')),
+      '#wrapper_attributes' => ['class' => ['checkbox']],
       '#default_value' => (bool) $module->status,
       '#disabled' => (bool) $module->status,
     );
@@ -421,7 +421,7 @@
 
     $row['enable'] += array(
       '#id' => $id,
-      '#parents' => array('modules', $module->info['package'], $module->getName(), 'enable'),
+      '#parents' => ['modules', $module->info['package'], $module->getName(), 'enable'],
     );
 
     // Add the module label and expand/collapse functionality.
@@ -433,15 +433,14 @@
         'label_id' => $id,
         'module_name' => $module->info['name'],
       ),
-      '#wrapper_attributes' => array(
-        'class' => array('module'),
-      ),
+      '#wrapper_attributes' => ['class' => ['module']],
     );
 
     // Add the description, along with any modules it requires.
     $description = '';
+    $description .= ' <div class="requirements">';
+    $description .= '<div class="admin-requirements">' . $this->t('Machine name: !key', array('!key' => $module->getName())) . '</div>';
     if ($module->info['version'] || $row['#requires'] || $row['#required_by']) {
-      $description .= ' <div class="requirements">';
       if ($module->info['version']) {
         $description .= '<div class="admin-requirements">' . $this->t('Version: !module-version', array('!module-version' => $module->info['version'])) . '</div>';
       }
@@ -451,11 +450,11 @@
       if ($row['#required_by']) {
         $description .= '<div class="admin-requirements">' . $this->t('Required by: !module-list', array('!module-list' => implode(', ', $row['#required_by']))) . '</div>';
       }
-      $description .= '</div>';
     }
+    $description .= '</div>';
 
     $links = '';
-    foreach (array('help', 'permissions', 'configure') as $key) {
+    foreach (['help', 'permissions', 'configure'] as $key) {
       $links .= (isset($row_links[$key]) ? drupal_render($row_links[$key]) : '');
     }
 
@@ -469,11 +468,9 @@
       '#type' => 'details',
       '#title' => $this->t('<span class="text"> ' . $module->info['description'] . '</span>'),
       '#attributes' => array('id' => $id . '-description'),
-      '#description' => t($description),
+      '#description' => $description,
       '#collapsed' => TRUE,
-      '#wrapper_attributes' => array(
-        'class' => array('description', 'expand'),
-      ),
+      '#wrapper_attributes' => ['class' => ['description', 'expand']]
     );
 
     return $row;