diff --git a/lib/API/JSON/v1/Setup.php b/lib/API/JSON/v1/Setup.php
index 5c3b62adc2..96b1eeffbc 100644
--- a/lib/API/JSON/v1/Setup.php
+++ b/lib/API/JSON/v1/Setup.php
@@ -7,6 +7,7 @@ use MailPoet\WP\Functions as WPFunctions;
 use MailPoet\Config\AccessControl;
 use MailPoet\Config\Activator;
 use MailPoet\Settings\SettingsController;
+use MailPoet\Config\Populator;
 
 if (!defined('ABSPATH')) exit;
 
@@ -22,7 +23,8 @@ class Setup extends APIEndpoint {
 
   function reset() {
     try {
-      $activator = new Activator(new SettingsController());
+      $settings = new SettingsController();
+      $activator = new Activator($settings, new Populator($settings, $this->wp));
       $activator->deactivate();
       $activator->activate();
       $this->wp->doAction('mailpoet_setup_reset');
diff --git a/lib/Config/Activator.php b/lib/Config/Activator.php
index 7c6dda826f..a33640a7e3 100644
--- a/lib/Config/Activator.php
+++ b/lib/Config/Activator.php
@@ -11,16 +11,19 @@ class Activator {
   /** @var SettingsController */
   private $settings;
 
-  function __construct(SettingsController $settings) {
+  /** @var Populator */
+  private $populator;
+
+  function __construct(SettingsController $settings, Populator $populator) {
     $this->settings = $settings;
+    $this->populator = $populator;
   }
 
   function activate() {
     $migrator = new Migrator();
     $migrator->up();
 
-    $populator = new Populator();
-    $populator->up();
+    $this->populator->up();
     $this->updateDbVersion();
 
     $caps = new Capabilities();
diff --git a/lib/Config/Populator.php b/lib/Config/Populator.php
index 6b55a49cbe..d613ffa3e3 100644
--- a/lib/Config/Populator.php
+++ b/lib/Config/Populator.php
@@ -41,9 +41,9 @@ class Populator {
   private $wp;
   const TEMPLATES_NAMESPACE = '\MailPoet\Config\PopulatorData\Templates\\';
 
-  function __construct() {
-    $this->settings = new SettingsController();
-    $this->wp = new WPFunctions();
+  function __construct(SettingsController $settings, WPFunctions $wp) {
+    $this->settings = $settings;
+    $this->wp = $wp;
     $this->prefix = Env::$db_prefix;
     $this->models = [
       'newsletter_option_fields',
diff --git a/lib/DI/ContainerConfigurator.php b/lib/DI/ContainerConfigurator.php
index c7e4fff8e8..123a7a801b 100644
--- a/lib/DI/ContainerConfigurator.php
+++ b/lib/DI/ContainerConfigurator.php
@@ -57,6 +57,7 @@ class ContainerConfigurator implements IContainerConfigurator {
     // Config
     $container->autowire(\MailPoet\Config\AccessControl::class)->setPublic(true);
     $container->autowire(\MailPoet\Config\Activator::class)->setPublic(true);
+    $container->autowire(\MailPoet\Config\Populator::class)->setPublic(true);
     $container->autowire(\MailPoet\Config\Changelog::class)->setPublic(true);
     $container->autowire(\MailPoet\Config\Hooks::class)->setPublic(true);
     $container->autowire(\MailPoet\Config\Initializer::class)->setPublic(true);
diff --git a/tests/integration/Cron/Workers/SendingQueue/SendingQueueTest.php b/tests/integration/Cron/Workers/SendingQueue/SendingQueueTest.php
index b3ede6a595..53bd8f6d7a 100644
--- a/tests/integration/Cron/Workers/SendingQueue/SendingQueueTest.php
+++ b/tests/integration/Cron/Workers/SendingQueue/SendingQueueTest.php
@@ -46,7 +46,8 @@ class SendingQueueTest extends \MailPoetTest {
     parent::_before();
     $wp_users = get_users();
     wp_set_current_user($wp_users[0]->ID);
-    $populator = new Populator();
+    $this->settings = new SettingsController();
+    $populator = new Populator($this->settings, WPFunctions::get());
     $populator->up();
     $this->subscriber = Subscriber::create();
     $this->subscriber->email = 'john@doe.com';
@@ -83,7 +84,6 @@ class SendingQueueTest extends \MailPoetTest {
     $this->newsletter_link->hash = 'abcde';
     $this->newsletter_link->save();
     $this->sending_error_handler = new SendingErrorHandler();
-    $this->settings = new SettingsController();
     $this->stats_notifications_worker = new StatsNotificationsScheduler($this->settings);
     $this->sending_queue_worker = new SendingQueueWorker($this->sending_error_handler, $this->stats_notifications_worker);
   }
diff --git a/tests/integration/Cron/Workers/SendingQueue/Tasks/MailerTest.php b/tests/integration/Cron/Workers/SendingQueue/Tasks/MailerTest.php
index 3afaa47ec3..f6f33959f4 100644
--- a/tests/integration/Cron/Workers/SendingQueue/Tasks/MailerTest.php
+++ b/tests/integration/Cron/Workers/SendingQueue/Tasks/MailerTest.php
@@ -9,6 +9,7 @@ use MailPoet\Mailer\Mailer;
 use MailPoet\Models\Setting;
 use MailPoet\Models\Subscriber;
 use MailPoet\Settings\SettingsController;
+use MailPoet\WP\Functions as WPFunctions;
 
 if (!defined('ABSPATH')) exit;
 
@@ -23,10 +24,10 @@ class MailerTest extends \MailPoetTest {
     parent::_before();
     $wp_users = get_users();
     wp_set_current_user($wp_users[0]->ID);
-    $populator = new Populator();
+    $this->settings = new SettingsController();
+    $populator = new Populator($this->settings, WPFunctions::get());
     $populator->up();
     $this->mailer_task = new MailerTask();
-    $this->settings = new SettingsController();
     $this->sender = $this->settings->get('sender');
   }
 
diff --git a/tests/integration/Newsletter/ShortcodesTest.php b/tests/integration/Newsletter/ShortcodesTest.php
index 15296e4a6a..4fb4c354fe 100644
--- a/tests/integration/Newsletter/ShortcodesTest.php
+++ b/tests/integration/Newsletter/ShortcodesTest.php
@@ -11,6 +11,7 @@ use MailPoet\Newsletter\Shortcodes\Categories\Date;
 use MailPoet\Newsletter\Url as NewsletterUrl;
 use MailPoet\Settings\SettingsController;
 use MailPoet\Subscription\Url as SubscriptionUrl;
+use MailPoet\WP\Functions as WPFunctions;
 
 require_once(ABSPATH . 'wp-admin/includes/user.php');
 
@@ -23,9 +24,9 @@ class ShortcodesTest extends \MailPoetTest {
 
   function _before() {
     parent::_before();
-    $populator = new Populator();
-    $populator->up();
     $this->settings = new SettingsController();
+    $populator = new Populator($this->settings, WPFunctions::get());
+    $populator->up();
     $this->WP_user = $this->_createWPUser();
     $this->WP_post = $this->_createWPPost();
     $this->subscriber = $this->_createSubscriber();
diff --git a/tests/integration/Subscription/UrlTest.php b/tests/integration/Subscription/UrlTest.php
index 3250b0a669..635fc4d808 100644
--- a/tests/integration/Subscription/UrlTest.php
+++ b/tests/integration/Subscription/UrlTest.php
@@ -6,11 +6,13 @@ use MailPoet\Subscription\Url;
 use MailPoet\Models\Subscriber;
 use MailPoet\Models\Setting;
 use MailPoet\Config\Populator;
+use MailPoet\Settings\SettingsController;
+use MailPoet\WP\Functions as WPFunctions;
 
 class UrlTest extends \MailPoetTest {
   function _before() {
     parent::_before();
-    $populator = new Populator();
+    $populator = new Populator(new SettingsController, WPFunctions::get());
     $populator->up();
   }