diff --git a/core/modules/system/src/Tests/Theme/FunctionsTest.php b/core/modules/system/src/Tests/Theme/FunctionsTest.php
index fa5a2ac..429d168 100644
--- a/core/modules/system/src/Tests/Theme/FunctionsTest.php
+++ b/core/modules/system/src/Tests/Theme/FunctionsTest.php
@@ -236,16 +236,15 @@ function testLinks() {
     // Verify that passing an array as heading works (core support).
     $variables['heading'] = array(
       'text' => 'Links heading',
-      'level' => 'h3',
       'attributes' => array('class' => array('heading')),
     );
-    $expected_heading = '<h3 class="heading">Links heading</h3>';
+    $expected_heading = '<h2 class="heading">Links heading</h2>';
     $expected = $expected_heading . $expected_links;
     $this->assertThemeOutput('links', $variables, $expected);
 
     // Verify that passing attributes for the heading works.
-    $variables['heading'] = array('text' => 'Links heading', 'level' => 'h3', 'attributes' => array('id' => 'heading'));
-    $expected_heading = '<h3 id="heading">Links heading</h3>';
+    $variables['heading'] = array('text' => 'Links heading', 'attributes' => array('id' => 'heading'));
+    $expected_heading = '<h2 id="heading">Links heading</h2>';
     $expected = $expected_heading . $expected_links;
     $this->assertThemeOutput('links', $variables, $expected);
 
@@ -357,16 +356,15 @@ function testIndexedKeyedLinks() {
     // Verify that passing an array as heading works (core support).
     $variables['heading'] = [
       'text' => 'Links heading',
-      'level' => 'h3',
       'attributes' => ['class' => ['heading']],
     ];
-    $expected_heading = '<h3 class="heading">Links heading</h3>';
+    $expected_heading = '<h2 class="heading">Links heading</h2>';
     $expected = $expected_heading . $expected_links;
     $this->assertThemeOutput('links', $variables, $expected);
 
     // Verify that passing attributes for the heading works.
-    $variables['heading'] = ['text' => 'Links heading', 'level' => 'h3', 'attributes' => ['id' => 'heading']];
-    $expected_heading = '<h3 id="heading">Links heading</h3>';
+    $variables['heading'] = ['text' => 'Links heading', 'attributes' => ['id' => 'heading']];
+    $expected_heading = '<h2 id="heading">Links heading</h2>';
     $expected = $expected_heading . $expected_links;
     $this->assertThemeOutput('links', $variables, $expected);