diff --git a/core/modules/system/system.admin.inc b/core/modules/system/system.admin.inc
index 921c887..d5c4dc2 100644
--- a/core/modules/system/system.admin.inc
+++ b/core/modules/system/system.admin.inc
@@ -2507,7 +2507,7 @@ function theme_system_modules_fieldset($variables) {
     if (isset($module['enable']['#id'])) {
       $label .= ' for="' . $module['enable']['#id'] . '"';
     }
-    $row[] = $label . '><strong>' . drupal_render($module['name']) . '</strong></label>';
+    $row[] = $label . ' id="' . $key . '"><strong>' . drupal_render($module['name']) . '</strong></label>';
     $row[] = drupal_render($module['version']);
     // Add the description, along with any modules it requires.
     $description = drupal_render($module['description']);