diff --git a/core/modules/system/src/Tests/Module/InstallUninstallTest.php b/core/modules/system/src/Tests/Module/InstallUninstallTest.php
index 26319a1..035f811 100644
--- a/core/modules/system/src/Tests/Module/InstallUninstallTest.php
+++ b/core/modules/system/src/Tests/Module/InstallUninstallTest.php
@@ -8,6 +8,7 @@
 namespace Drupal\system\Tests\Module;
 
 use Drupal\Component\Render\FormattableMarkup;
+use Drupal\Core\StringTranslation\TranslatableMarkup;
 use Drupal\Core\Logger\RfcLogLevel;
 
 /**
@@ -79,7 +80,6 @@ public function testInstallUninstall() {
     // Go through each module in the list and try to install and uninstall
     // it with its dependencies.
     while (list($name, $module) = each($all_modules)) {
-      debug("It's going to install: " . $name);
       $was_installed_list = \Drupal::moduleHandler()->getModuleList();
 
       // Start a list of modules that we expect to be installed this time.
@@ -233,7 +233,7 @@ protected function assertSuccessfulUninstall($module, $package = 'Core') {
     $edit['uninstall[' . $module . ']'] = TRUE;
     $this->drupalPostForm('admin/modules/uninstall', $edit, 'Uninstall');
     $this->drupalPostForm(NULL, NULL, 'Uninstall');
-    $this->assertText(('The selected modules have been uninstalled.'), 'Modules status has been updated.');
+    $this->assertText(new TranslatableMarkup('The selected modules have been uninstalled.'), 'Modules status has been updated.');
     $this->assertModules(array($module), FALSE);
 
     // Check that the appropriate hook was fired and the appropriate log