diff --git a/.gitignore b/.gitignore
index b4a09c7252..7a85177ab4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,5 +4,4 @@ composer.phar
 vendor
 tests/_output/*
 node_modules
-tests/*.suite.yml
 .env
diff --git a/lib/util/dkim.php b/lib/util/dkim.php
index 5e673dcef2..7e14965c52 100644
--- a/lib/util/dkim.php
+++ b/lib/util/dkim.php
@@ -2,7 +2,7 @@
 namespace MailPoet\Util;
 class DKIM {
 
-  public static function generate_keys() {
+  public static function generateKeys() {
     try {
       $certificate = openssl_pkey_new(array('private_bits'  =>  1024));
 
diff --git a/tests/_support/_generated/AcceptanceTesterActions.php b/tests/_support/_generated/AcceptanceTesterActions.php
index ce737ad95d..50dde7ae9c 100644
--- a/tests/_support/_generated/AcceptanceTesterActions.php
+++ b/tests/_support/_generated/AcceptanceTesterActions.php
@@ -1,4 +1,4 @@
-<?php  //[STAMP] 9cd003010af5e6228d99a8c6909f010e
+<?php  //[STAMP] 1f68379452ca79a97b0ccbe71a086169
 namespace _generated;
 
 // This class was automatically generated by build task
@@ -8,7 +8,7 @@ namespace _generated;
 use Codeception\Module\WebDriver;
 use Helper\Acceptance;
 
-trait acceptancetesterActions
+trait AcceptanceTesterActions
 {
     /**
      * @return \Codeception\Scenario
diff --git a/tests/acceptance.suite.yml b/tests/acceptance.suite.yml
new file mode 100644
index 0000000000..7a3799e032
--- /dev/null
+++ b/tests/acceptance.suite.yml
@@ -0,0 +1,13 @@
+# Codeception Test Suite Configuration
+#
+# Suite for acceptance tests.
+# Perform tests in browser using the WebDriver or PhpBrowser.
+# If you need both WebDriver and PHPBrowser tests - create a separate suite.
+
+class_name: AcceptanceTester
+modules:
+    enabled:
+        - WebDriver:
+            url: 'http://localhost'
+            browser: phantomjs
+        - \Helper\Acceptance
diff --git a/tests/unit/DKIMCest.php b/tests/unit/DKIMCest.php
index 335af2ddef..c7f4e98333 100644
--- a/tests/unit/DKIMCest.php
+++ b/tests/unit/DKIMCest.php
@@ -4,7 +4,7 @@ use \UnitTester;
 class DKIMCest {
 
   public function it_can_generate_keys() {
-    $keys = \MailPoet\Util\DKIM::generate_keys();
+    $keys = \MailPoet\Util\DKIM::generateKeys();
     $public_header = '-----BEGIN PUBLIC KEY-----';
     $private_header = '-----BEGIN RSA PRIVATE KEY-----';