diff --git a/core/modules/system/tests/src/Functional/Module/UninstallTest.php b/core/modules/system/tests/src/Functional/Module/UninstallTest.php
index 32a9517332..41df4172c2 100644
--- a/core/modules/system/tests/src/Functional/Module/UninstallTest.php
+++ b/core/modules/system/tests/src/Functional/Module/UninstallTest.php
@@ -60,7 +60,7 @@ public function testUninstallPage() {
     foreach (\Drupal::service('extension.list.module')->getAllInstalledInfo() as $module => $info) {
       $field_name = "uninstall[$module]";
       if (!empty($info['required'])) {
-        // A required module should not be listed on the uninstall page..
+        // A required module should not be listed on the uninstall page.
         $this->assertSession()->fieldNotExists($field_name);
       }
       else {