diff -u b/src/Plugin/Block/MenuBlock.php b/src/Plugin/Block/MenuBlock.php
--- b/src/Plugin/Block/MenuBlock.php
+++ b/src/Plugin/Block/MenuBlock.php
@@ -35,7 +35,7 @@
   const LABEL_ACTIVE_ITEM = 'active_item';
   const LABEL_PARENT = 'parent';
   const LABEL_ROOT = 'root';
-  const LABEL_FIXED_PARENT = 'fixed_parent';
+  const LABEL_FIXED = 'fixed';
 
   /**
    * Entity type manager.
@@ -129,7 +129,7 @@
       '#options' => [
         self::LABEL_BLOCK => $this->t('Block title'),
         self::LABEL_MENU => $this->t('Menu title'),
-        self::LABEL_FIXED_PARENT => $this->t("Fixed parent item's title"),
+        self::LABEL_FIXED => $this->t("Fixed menu item's title"),
         self::LABEL_ACTIVE_ITEM => $this->t("Active item's title"),
         self::LABEL_PARENT => $this->t("Active trail's parent title"),
         self::LABEL_ROOT => $this->t("Active trail's root title"),
@@ -407,8 +407,8 @@
       case self::LABEL_ROOT:
         return $this->getActiveTrailRootTitle();
 
-      case self::LABEL_FIXED_PARENT:
-        return $this->getFixedParentItemTitle();
+      case self::LABEL_FIXED:
+        return $this->getFixedMenuItemTitle();
 
       default:
         return $this->label();
@@ -439,12 +439,12 @@
    * @return string|null
    *   Title of the configured (fixed) parent item, or NULL if there is none.
    */
-  protected function getFixedParentItemTitle() {
+  protected function getFixedMenuItemTitle() {
     $parent = $this->configuration['parent'];
 
     if ($parent) {
-      $fixed_parent_menu_link_id = str_replace($this->getDerivativeId() . ':', '', $parent);
-      return $this->getLinkTitleFromLink($fixed_parent_menu_link_id);
+      $fixed_menu_link_id = str_replace($this->getDerivativeId() . ':', '', $parent);
+      return $this->getLinkTitleFromLink($fixed_menu_link_id);
     }
   }
 
diff -u b/tests/src/Functional/MenuBlockTest.php b/tests/src/Functional/MenuBlockTest.php
--- b/tests/src/Functional/MenuBlockTest.php
+++ b/tests/src/Functional/MenuBlockTest.php
@@ -472,77 +472,73 @@
       'settings[parent]' => 'main:' . $this->links['child-1'],
       'region' => 'primary_menu',
     ], 'Save block');
-    $options = $this->getTestMenuBlockTitltOptions();
-    foreach ($options as $option) {
-      $this->drupalPostForm('admin/structure/block/manage/main', [
-        'settings[label_type]' => $option['option'],
-      ], 'Save block');
-      $test_link = empty($option['test_link']) ? 'menu-block-test/hierarchy/parent/child-1/child-1-1' : $option['test_link'];
-      $this->drupalGet($test_link);
-      $this->assertSession()->elementTextContains('css', 'h2#block-main-menu', $option['title']);
-    }
-  }
 
-  /**
-   * Provides test data for testMenuBlockTitleOptions().
-   */
-  protected function getTestMenuBlockTitltOptions() {
-    return [
-      [
+    $options = [
+      'block label' => [
         'option' => MenuBlock::LABEL_BLOCK,
         'title' => 'Block title',
       ],
-      [
+      'menu label' => [
         'option' => MenuBlock::LABEL_MENU,
         'title' => 'Main navigation',
       ],
-      [
-        'option' => MenuBlock::LABEL_FIXED_PARENT,
-        'title' => 'child-1 menu item'
+      'fixed menu item' => [
+        'option' => MenuBlock::LABEL_FIXED,
+        'title' => 'child-1 menu item',
       ],
-      [
-        'option' => MenuBlock::LABEL_FIXED_PARENT,
+      'fixed menu item parent' => [
+        'option' => MenuBlock::LABEL_FIXED,
         'title' => 'child-1 menu item',
-        'test_link' => 'menu-block-test/hierarchy/parent'
+        'test_link' => 'menu-block-test/hierarchy/parent',
       ],
-      [
+      'active item' => [
         'option' => MenuBlock::LABEL_ACTIVE_ITEM,
         'title' => 'child-1-1 menu item',
       ],
-      [
+      'parent item' => [
         'option' => MenuBlock::LABEL_PARENT,
         'title' => 'child-1 menu item',
       ],
-      [
+      'parent item top level' => [
+        'option' => MenuBlock::LABEL_PARENT,
+        'title' => 'parent menu item',
+        'test_link' => 'menu-block-test/hierarchy/parent',
+      ],
+      'parent item 2' => [
         'option' => MenuBlock::LABEL_PARENT,
         'title' => 'parent menu item',
         'test_link' => 'menu-block-test/hierarchy/parent/child-1',
       ],
-      [
+      'parent item 3' => [
         'option' => MenuBlock::LABEL_PARENT,
         'title' => 'child-1 menu item',
         'test_link' => 'menu-block-test/hierarchy/parent/child-1/child-1-2',
       ],
-      [
-        'option' => MenuBlock::LABEL_PARENT,
-        'title' => 'parent menu item',
-        'test_link' => 'menu-block-test/hierarchy/parent',
-      ],
-      [
+      'menu root' => [
         'option' => MenuBlock::LABEL_ROOT,
-        'title' => 'parent menu item'
+        'title' => 'parent menu item',
       ],
-      [
+      'menu root 2' => [
         'option' => MenuBlock::LABEL_ROOT,
         'title' => 'parent menu item',
-        'test_link' => 'menu-block-test/hierarchy/parent/child-1/child-1-2',
+        'test_link' => 'menu-block-test/hierarchy/parent/child-1',
       ],
-      [
+      'menu root 3' => [
         'option' => MenuBlock::LABEL_ROOT,
         'title' => 'parent menu item',
-        'test_link' => 'menu-block-test/hierarchy/parent/child-1',
+        'test_link' => 'menu-block-test/hierarchy/parent/child-1/child-1-2',
       ],
     ];
+
+    foreach ($options as $option) {
+      $this->drupalPostForm('admin/structure/block/manage/main', [
+        'settings[label_type]' => $option['option'],
+      ], 'Save block');
+      $test_link = empty($option['test_link']) ? 'menu-block-test/hierarchy/parent/child-1/child-1-1' : $option['test_link'];
+      $this->drupalGet($test_link);
+      $this->assertSession()
+        ->elementTextContains('css', 'h2#block-main-menu', $option['title']);
+    }
   }
 
 }