reverted:
--- b/core/modules/statistics/config/schema/statistics.schema.yml
+++ a/core/modules/statistics/config/schema/statistics.schema.yml
@@ -25,9 +25,6 @@
   type: block_settings
   label: 'Popular content block settings'
   mapping:
-    langcode:
-      type: string
-      label: 'Language code'
     top_day_num:
       type: integer
       label: 'Number of day\s top views to display'
diff -u b/core/modules/statistics/migration_templates/statistics_settings.yml b/core/modules/statistics/migration_templates/statistics_settings.yml
--- b/core/modules/statistics/migration_templates/statistics_settings.yml
+++ b/core/modules/statistics/migration_templates/statistics_settings.yml
@@ -8,0 +9,17 @@
+    - statistics_enable_access_log
+    - statistics_flush_accesslog_timer
+    - statistics_count_content_views
+process:
+  'access_log/enabled': statistics_enable_access_log
+  'access_log/max_lifetime': statistics_flush_accesslog_timer
+  'count_content_views': statistics_count_content_views
+destination:
+  plugin: config
+  config_name: statistics.settings
+id: d6_statistics_settings
+label: Statistics configuration
+migration_tags:
+  - Drupal 6
+source:
+  plugin: variable
+  variables:
reverted:
--- b/core/modules/statistics/src/Tests/Migrate/MigrateStatisticsConfigsTest.php
+++ a/core/modules/statistics/src/Tests/Migrate/d6/MigrateStatisticsConfigsTest.php
@@ -2,10 +2,10 @@
 
 /**
  * @file
+ * Contains \Drupal\statistics\Tests\Migrate\d6\MigrateStatisticsConfigsTest.
- * Contains \Drupal\statistics\Tests\Migrate\MigrateStatisticsConfigsTest.
  */
 
+namespace Drupal\statistics\Tests\Migrate\d6;
-namespace Drupal\statistics\Tests\Migrate;
 
 use Drupal\config\Tests\SchemaCheckTestTrait;
 use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
@@ -29,7 +29,7 @@
    */
   protected function setUp() {
     parent::setUp();
+    $this->executeMigration('d6_statistics_settings');
-    $this->executeMigration('statistics_settings');
   }
 
   /**
only in patch2:
unchanged:
--- a/core/modules/statistics/migration_templates/d6_statistics_settings.yml
+++ /dev/null
@@ -1,17 +0,0 @@
-id: d6_statistics_settings
-label: Statistics configuration
-migration_tags:
-  - Drupal 6
-source:
-  plugin: variable
-  variables:
-    - statistics_enable_access_log
-    - statistics_flush_accesslog_timer
-    - statistics_count_content_views
-process:
-  'access_log/enabled': statistics_enable_access_log
-  'access_log/max_lifetime': statistics_flush_accesslog_timer
-  'count_content_views': statistics_count_content_views
-destination:
-  plugin: config
-  config_name: statistics.settings
only in patch2:
unchanged:
--- a/core/modules/statistics/src/Tests/Migrate/d6/MigrateStatisticsConfigsTest.php
+++ b/core/modules/statistics/src/Tests/Migrate/d6/MigrateStatisticsConfigsTest.php
@@ -29,7 +29,7 @@ class MigrateStatisticsConfigsTest extends MigrateDrupal6TestBase {
    */
   protected function setUp() {
     parent::setUp();
-    $this->executeMigration('d6_statistics_settings');
+    $this->executeMigration('statistics_settings');
   }
 
   /**
only in patch2:
unchanged:
--- /dev/null
+++ b/core/modules/statistics/src/Tests/Migrate/d7/MigrateStatisticsConfigsTest.php
@@ -0,0 +1,46 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\statistics\Tests\Migrate\d7\MigrateStatisticsConfigsTest.
+ */
+
+namespace Drupal\statistics\Tests\Migrate\d7;
+
+use Drupal\config\Tests\SchemaCheckTestTrait;
+use Drupal\migrate_drupal\Tests\d7\MigrateDrupal7TestBase;
+
+/**
+ * Upgrade variables to statistics.settings.yml.
+ *
+ * @group migrate_drupal_7
+ */
+class MigrateStatisticsConfigsTest extends MigrateDrupal7TestBase {
+
+  use SchemaCheckTestTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  public static $modules = array('statistics');
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp() {
+    parent::setUp();
+    $this->executeMigration('statistics_settings');
+  }
+
+  /**
+   * Tests migration of statistics variables to statistics.settings.yml.
+   */
+  public function testStatisticsSettings() {
+    $config = $this->config('statistics.settings');
+    $this->assertIdentical(TRUE, $config->get('access_log.enabled'));
+    $this->assertIdentical(3600, $config->get('access_log.max_lifetime'));
+    $this->assertIdentical(1, $config->get('count_content_views'));
+    $this->assertConfigSchema(\Drupal::service('config.typed'), 'statistics.settings', $config->get());
+  }
+
+}