diff --git a/core/modules/shortcut/src/Tests/ShortcutSetsTest.php b/core/modules/shortcut/src/Tests/ShortcutSetsTest.php
index 485beaf..151c0a0 100644
--- a/core/modules/shortcut/src/Tests/ShortcutSetsTest.php
+++ b/core/modules/shortcut/src/Tests/ShortcutSetsTest.php
@@ -131,7 +131,7 @@ function testShortcutSetSwitchCreate() {
   function testShortcutSetSwitchNoSetName() {
     $edit = array('set' => 'new');
     $this->drupalPostForm('user/' . $this->adminUser->id() . '/shortcuts', $edit, t('Change set'));
-    $this->assertRaw(formatPlural(1, '1 error has been found: !errors', '@count errors have been found: !errors', [
+    $this->assertRaw(\Drupal::translation()->formatPlural(1, '1 error has been found: !errors', '@count errors have been found: !errors', [
       '!errors' => SafeMarkup::set('<a href="#edit-new">New set</a>')
     ]));
     $current_set = shortcut_current_displayed_set($this->adminUser);
diff --git a/core/modules/system/src/Tests/Form/ValidationTest.php b/core/modules/system/src/Tests/Form/ValidationTest.php
index a781fd4..e145b72 100644
--- a/core/modules/system/src/Tests/Form/ValidationTest.php
+++ b/core/modules/system/src/Tests/Form/ValidationTest.php
@@ -292,7 +292,7 @@ protected function assertErrorMessages($messages) {
       // Gather the element for checking the jump link section.
       $error_links[] = \Drupal::l($message['title'], Url::fromRoute('<none>', [], ['fragment' => 'edit-' . str_replace('_', '-', $message['key']), 'external' => TRUE]));
     }
-    $top_message = formatPlural(count($error_links), '1 error has been found: !errors', '@count errors have been found: !errors', [
+    $top_message = \Drupal::translation()->formatPlural(count($error_links), '1 error has been found: !errors', '@count errors have been found: !errors', [
       '!errors' => SafeMarkup::set(implode(', ', $error_links))
     ]);
     $this->assertRaw($top_message);
diff --git a/core/modules/user/src/Tests/UserBlocksTest.php b/core/modules/user/src/Tests/UserBlocksTest.php
index 1eba0d4..2a46671 100644
--- a/core/modules/user/src/Tests/UserBlocksTest.php
+++ b/core/modules/user/src/Tests/UserBlocksTest.php
@@ -48,7 +48,7 @@ function testUserLoginBlock() {
     $edit['name'] = $this->randomMachineName();
     $edit['pass'] = $this->randomMachineName();
     $this->drupalPostForm('node', $edit, t('Log in'));
-    $this->assertRaw(formatPlural(1, '1 error has been found: !errors', '@count errors have been found: !errors', [
+    $this->assertRaw(\Drupal::translation()->formatPlural(1, '1 error has been found: !errors', '@count errors have been found: !errors', [
       '!errors' => SafeMarkup::set('<a href="#edit-name">Username</a>')
     ]));
     $this->assertText(t('Sorry, unrecognized username or password.'));