diff -u b/core/modules/image/image.install b/core/modules/image/image.install
--- b/core/modules/image/image.install
+++ b/core/modules/image/image.install
@@ -156,8 +156,8 @@
     // Convert image style into a configuration object.
     Drupal::config('image.style.' . $style['name'])
       ->set('name', $style['name'])
-      // @todo Replace with $style['label'] after Drupal 7.23 released.
-      ->set('label', isset($style['label']) ? $style['label'] : $style['name'])
+      // Labels for image styles added in Drupal 7.23.
+      ->set('label', $style['label'])
       ->set('uuid', $uuid->generate())
       ->set('status', 1)
       ->set('langcode', $language->id)
diff -u b/core/modules/system/lib/Drupal/system/Tests/Upgrade/ImageUpgradePathTest.php b/core/modules/system/lib/Drupal/system/Tests/Upgrade/ImageUpgradePathTest.php
--- b/core/modules/system/lib/Drupal/system/Tests/Upgrade/ImageUpgradePathTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Upgrade/ImageUpgradePathTest.php
@@ -36,7 +36,7 @@
     // Verify that image styles were properly upgraded.
     $expected_styles['test-custom'] = array(
       'name' => 'test-custom',
-      'label' => 'test-custom',
+      'label' => 'Test custom',
       'status' => '1',
       'langcode' => 'en',
       'effects' => array(
@@ -58,7 +58,7 @@
     );
     $expected_styles['thumbnail'] = array(
       'name' => 'thumbnail',
-      'label' => 'thumbnail',
+      'label' => 'Thumbnail (100x100)',
       'status' => '1',
       'langcode' => 'en',
       'effects' => array (
only in patch2:
unchanged:
--- a/core/modules/system/tests/upgrade/drupal-7.image.database.php
+++ b/core/modules/system/tests/upgrade/drupal-7.image.database.php
@@ -14,16 +14,19 @@
 db_insert('image_styles')->fields(array(
   'isid',
   'name',
+  'label'
 ))
 // Override thumbnail style.
 ->values(array(
   'isid' => '1',
   'name' => 'thumbnail',
+  'label' => 'Thumbnail (100x100)',
 ))
 // Custom style.
 ->values(array(
   'isid' => '2',
   'name' => 'test-custom',
+  'label' => 'Test custom',
 ))
 ->execute();