diff --git a/core/includes/common.inc b/core/includes/common.inc
index d3a4c55..7376040 100644
--- a/core/includes/common.inc
+++ b/core/includes/common.inc
@@ -250,7 +250,7 @@ function drupal_get_profile() {
     $profile = $install_state['parameters']['profile'];
   }
   else {
-    $profile = variable_get('install_profile', 'standard');
+    $profile = config('system.site')->get('profile.install');
   }
 
   return $profile;
diff --git a/core/includes/install.core.inc b/core/includes/install.core.inc
index c4de9ee..7eb5511 100644
--- a/core/includes/install.core.inc
+++ b/core/includes/install.core.inc
@@ -1834,7 +1834,7 @@ function install_import_translations_remaining(&$install_state) {
 function install_finished(&$install_state) {
   $profile = drupal_get_profile();
   // Remember the profile which was used.
-  variable_set('install_profile', $profile);
+  config('system.site')->set('profile.install', $profile)->save();
 
   // Installation profiles are always loaded last.
   module_set_weight($profile, 1000);
diff --git a/core/includes/update.inc b/core/includes/update.inc
index b39eadb..98ac5a6 100644
--- a/core/includes/update.inc
+++ b/core/includes/update.inc
@@ -339,6 +339,13 @@ function update_prepare_d8_bootstrap() {
         variable_set('language_default', (array) $language_default);
       }
 
+      // Moves install_profile from variable to config. You can't do that in
+      // system.install because _system_rebuild_module_data() needs the profile
+      // directly.
+      update_variables_to_config('system.site', array(
+        'install_profile' => 'profile.install'
+      ));
+
       $module_config = config('system.module');
       $disabled_modules = config('system.module.disabled');
       $theme_config = config('system.theme');
diff --git a/core/modules/system/config/system.site.yml b/core/modules/system/config/system.site.yml
index b642dc8..0b3a700 100644
--- a/core/modules/system/config/system.site.yml
+++ b/core/modules/system/config/system.site.yml
@@ -7,3 +7,5 @@ page:
   front: user
 admin_compact_mode: '0'
 weight_select_max: '100'
+profile:
+  install: standard
diff --git a/core/modules/system/lib/Drupal/system/Tests/Bootstrap/GetFilenameUnitTest.php b/core/modules/system/lib/Drupal/system/Tests/Bootstrap/GetFilenameUnitTest.php
index a4763b6..8715758 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Bootstrap/GetFilenameUnitTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Bootstrap/GetFilenameUnitTest.php
@@ -8,6 +8,7 @@
 namespace Drupal\system\Tests\Bootstrap;
 
 use Drupal\simpletest\UnitTestBase;
+use Symfony\Component\DependencyInjection\Reference;
 
 /**
  * Tests drupal_get_filename()'s availability.
@@ -26,6 +27,17 @@ public static function getInfo() {
    * Tests that drupal_get_filename() works when the file is not in database.
    */
   function testDrupalGetFilename() {
+
+    // Setup a config factory without storage because drupal_get_profile()
+    // uses config.
+    drupal_container()->register('config.null_storage', 'Drupal\Core\Config\NullStorage');
+    drupal_container()->register('config.factory', 'Drupal\Core\Config\ConfigFactory')
+      ->addArgument(new Reference('config.null_storage'))
+      ->addArgument(new Reference('event_dispatcher'));
+
+    drupal_container()->register('event_dispatcher', 'Symfony\Component\EventDispatcher\ContainerAwareEventDispatcher')
+      ->addArgument(new Reference('service_container'));
+
     // Assert that the test is meaningful by making sure the keyvalue service
     // does not exist.
     $this->assertFalse(drupal_container()->has('keyvalue'), 'The container has no keyvalue service.');
diff --git a/core/modules/system/lib/Drupal/system/Tests/Upgrade/SystemUpgradePathTest.php b/core/modules/system/lib/Drupal/system/Tests/Upgrade/SystemUpgradePathTest.php
index d2cde1f..ec8e04f 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Upgrade/SystemUpgradePathTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Upgrade/SystemUpgradePathTest.php
@@ -72,6 +72,7 @@ public function testVariableUpgrade() {
       'page.403' => '403',
       'page.404' => '404',
       'page.front' => 'node',
+      'profile.install' => 'minimal',
     );
 
     $expected_config['user.settings'] = array(
diff --git a/core/modules/system/tests/upgrade/drupal-7.system.database.php b/core/modules/system/tests/upgrade/drupal-7.system.database.php
index 44fad9f..27b82ee 100644
--- a/core/modules/system/tests/upgrade/drupal-7.system.database.php
+++ b/core/modules/system/tests/upgrade/drupal-7.system.database.php
@@ -195,3 +195,7 @@
   'value' => serialize('public://color/seven-09696463/dummy-screenshot.png'),
 ))
   ->execute();
+db_update('variable')
+  ->fields(array('value' => 's:7:"minimal";'))
+  ->condition('name', 'install_profile')
+  ->execute();