diff --git a/RoboFile.php b/RoboFile.php
index 530ab1da9b..77d3df5223 100644
--- a/RoboFile.php
+++ b/RoboFile.php
@@ -474,6 +474,7 @@ class RoboFile extends \Robo\Tasks {
       ->rawArg('--configuration=phpstan-tests.neon')
       ->rawArg(
         implode(' ', [
+          "$dir/tests/_support",
           "$dir/tests/DataFactories",
           "$dir/tests/acceptance",
           "$dir/tests/unit",
diff --git a/tasks/phpstan/phpstan-tests.neon b/tasks/phpstan/phpstan-tests.neon
index ac076a7423..1e4f55ade0 100644
--- a/tasks/phpstan/phpstan-tests.neon
+++ b/tasks/phpstan/phpstan-tests.neon
@@ -8,6 +8,7 @@ parameters:
     - %mailpoetDir%/vendor/codeception/verify/src/Codeception/function.php
     - %mailpoetDir%/vendor/codeception/verify/src/Codeception/Verify.php
   autoload_directories:
+    - %mailpoetDir%/tests/_support/_generated # without this line PHPStan segfaults ¯\_(ツ)_/¯
     - %mailpoetDir%/tests/_support
     - %mailpoetDir%/tests/acceptance
     - %mailpoetDir%/tests/unit
@@ -15,6 +16,8 @@ parameters:
     - WP_DEBUG
   ignoreErrors:
     - '/Parameter #1 $cssOrXPath of method AcceptanceTester::moveMouseOver() expects string|null, array<string, string> given./'
+  excludes_analyse:
+    - %mailpoetDir%/tests/_support/_generated
 
 includes:
   - vendor/phpstan/phpstan-phpunit/extension.neon
diff --git a/tests/_support/AcceptanceTester.php b/tests/_support/AcceptanceTester.php
index 2a98384928..23c2bbe1a0 100644
--- a/tests/_support/AcceptanceTester.php
+++ b/tests/_support/AcceptanceTester.php
@@ -1,6 +1,6 @@
 <?php
 
-use Mailpoet\Models\Form as FormModel;
+use MailPoet\Models\Form as FormModel;
 use MailPoet\Test\DataFactories\Form;
 use MailPoet\Test\DataFactories\Segment;
 use MailPoet\Test\DataFactories\Subscriber;
diff --git a/tests/_support/Helper/Acceptance.php b/tests/_support/Helper/Acceptance.php
index 8a9fe63dc9..8a9b1c8611 100644
--- a/tests/_support/Helper/Acceptance.php
+++ b/tests/_support/Helper/Acceptance.php
@@ -2,6 +2,7 @@
 
 namespace Helper;
 
+use Codeception\Module\WebDriver;
 use Codeception\TestInterface;
 
 // here you can define custom actions
@@ -18,6 +19,7 @@ class Acceptance extends \Codeception\Module
    */
   function seeNoJSErrors() {
     $wd = $this->getModule('WPWebDriver');
+    assert($wd instanceof WebDriver);
 
     try {
       $logEntries = array_slice(
@@ -45,7 +47,9 @@ class Acceptance extends \Codeception\Module
   }
 
   function getCurrentUrl() {
-    return $this->getModule('WPWebDriver')->_getCurrentUri();
+    $wd = $this->getModule('WPWebDriver');
+    assert($wd instanceof WebDriver);
+    return $wd->_getCurrentUri();
   }
 
   protected function isJSError($logEntry) {