diff -u b/core/modules/config/src/Tests/ConfigInstallProfileOverrideTest.php b/core/modules/config/src/Tests/ConfigInstallProfileOverrideTest.php
--- b/core/modules/config/src/Tests/ConfigInstallProfileOverrideTest.php
+++ b/core/modules/config/src/Tests/ConfigInstallProfileOverrideTest.php
@@ -36,7 +36,7 @@
         'requirements_warning' => 172800,
         'requirements_error' => 1209600,
       ),
-      'logging' => 0,
+      'logging' => 1,
     );
     // The expected active configuration altered by the install profile.
     $expected_profile_data = array(
@@ -44,7 +44,7 @@
         'requirements_warning' => 259200,
         'requirements_error' => 1209600,
       ),
-      'logging' => 0,
+      'logging' => 1,
     );
     $expected_profile_data['_core']['default_config_hash'] = Crypt::hashBase64(serialize($expected_profile_data));
 
diff -u b/core/modules/config/tests/config_override_test/config/install/system.cron.yml b/core/modules/config/tests/config_override_test/config/install/system.cron.yml
--- b/core/modules/config/tests/config_override_test/config/install/system.cron.yml
+++ b/core/modules/config/tests/config_override_test/config/install/system.cron.yml
@@ -4 +4 @@
-logging: 0
+logging: 1
reverted:
--- b/core/modules/dblog/src/Tests/DbLogTest.php
+++ a/core/modules/dblog/src/Tests/DbLogTest.php
@@ -158,9 +158,12 @@
     // Get last ID after cron was run.
     $current_id = db_query('SELECT MAX(wid) FROM {watchdog}')->fetchField();
 
+    // Get the number of enabled modules. Cron adds a log entry for each module.
+    $list = \Drupal::moduleHandler()->getImplementations('cron');
+    $module_count = count($list);
+
     $count = $current_id - $last_id;
+    $this->assertTrue(($current_id - $last_id) == $module_count + 2, format_string('Cron added @count of @expected new log entries', array('@count' => $count, '@expected' => $module_count + 2)));
-    $expected_count = 1;
-    $this->assertTrue(($current_id - $last_id) == $expected_count, format_string('Cron added @count of @expected new log entries', array('@count' => $count, '@expected' => $expected_count)));
   }
 
   /**
diff -u b/core/modules/system/config/install/system.cron.yml b/core/modules/system/config/install/system.cron.yml
--- b/core/modules/system/config/install/system.cron.yml
+++ b/core/modules/system/config/install/system.cron.yml
@@ -4 +4 @@
-logging: 0
+logging: 1
diff -u b/core/modules/system/src/Form/CronForm.php b/core/modules/system/src/Form/CronForm.php
--- b/core/modules/system/src/Form/CronForm.php
+++ b/core/modules/system/src/Form/CronForm.php
@@ -10,11 +10,13 @@
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\Core\State\StateInterface;
 use Symfony\Component\DependencyInjection\ContainerInterface;
+use Drupal\Core\Form\ConfigFormBaseTrait;
 
 /**
  * Configure cron settings for this site.
  */
 class CronForm extends FormBase {
+  use ConfigFormBaseTrait;
 
   /**
    * Stores the state storage service.
@@ -68,6 +70,13 @@
   /**
    * {@inheritdoc}
    */
+  protected function getEditableConfigNames() {
+    return ['system.cron'];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
   public static function create(ContainerInterface $container) {
     return new static(
       $container->get('config.factory'),
@@ -121,7 +130,7 @@
     $form['cron']['logging'] = array(
       '#type' => 'checkbox',
       '#title' => t('Detailed cron logging'),
-      '#default_value' => \Drupal::config('system.cron')->get('logging'),
+      '#default_value' => $this->config('system.cron')->get('logging'),
       '#description' => 'Run times of individual cron jobs will be written to watchdog',
     );
 
@@ -139,7 +148,7 @@
    * Runs cron and reloads the page.
    */
   public function submitForm(array &$form, FormStateInterface $form_state) {
-    \Drupal::configFactory()->getEditable('system.cron')
+    $this->config('system.cron')
       ->set('logging', $form_state->getValue('logging'))
       ->save();
     drupal_set_message(t('The configuration options have been saved.'));
diff -u b/core/modules/system/tests/src/Kernel/Migrate/d7/MigrateSystemConfigurationTest.php b/core/modules/system/tests/src/Kernel/Migrate/d7/MigrateSystemConfigurationTest.php
--- b/core/modules/system/tests/src/Kernel/Migrate/d7/MigrateSystemConfigurationTest.php
+++ b/core/modules/system/tests/src/Kernel/Migrate/d7/MigrateSystemConfigurationTest.php
@@ -24,7 +24,7 @@
         'requirements_warning' => 172800,
         'requirements_error' => 1209600,
       ],
-      'logging' => 0,
+      'logging' => 1,
     ],
     'system.date' => [
       'country' => [
diff -u b/core/profiles/standard/config/install/system.cron.yml b/core/profiles/standard/config/install/system.cron.yml
--- b/core/profiles/standard/config/install/system.cron.yml
+++ b/core/profiles/standard/config/install/system.cron.yml
@@ -4 +4 @@
-logging: 0
+logging: 1
diff -u b/core/profiles/testing_config_overrides/config/install/system.cron.yml b/core/profiles/testing_config_overrides/config/install/system.cron.yml
--- b/core/profiles/testing_config_overrides/config/install/system.cron.yml
+++ b/core/profiles/testing_config_overrides/config/install/system.cron.yml
@@ -4 +4 @@
-logging: 0
+logging: 1
only in patch2:
unchanged:
--- a/core/modules/system/system.install
+++ b/core/modules/system/system.install
@@ -1730,3 +1730,13 @@ function system_update_8201() {
 /**
  * @} End of "addtogroup updates-8.2.0".
  */
+
+/**
+ * Add detailed cron logging configuration.
+ */
+function system_update_8202() {
+  $config_factory = \Drupal::configFactory();
+  $system_cron_config = $config_factory->getEditable('system.cron')
+    ->set('logging', 1)
+    ->save(TRUE);
+}