diff --git a/includes/engelsystem_provider.php b/includes/engelsystem_provider.php
index 2dc425a2..fc5553bc 100644
--- a/includes/engelsystem_provider.php
+++ b/includes/engelsystem_provider.php
@@ -76,9 +76,6 @@ require_once realpath(__DIR__ . '/../includes/pages/user_shifts.php');
 
 require_once realpath(__DIR__ . '/../vendor/parsedown/Parsedown.php');
 
-if (! defined('PHPUNIT_TESTSUITE')) {
-  session_lifetime(24 * 60, preg_replace("/[^a-z0-9-]/", '', md5(__DIR__)));
-}
 session_start();
 
 gettext_init();
@@ -87,4 +84,4 @@ sql_connect($config['host'], $config['user'], $config['pw'], $config['db']);
 
 load_auth();
 
-?>
\ No newline at end of file
+?>
diff --git a/includes/helper/session_helper.php b/includes/helper/session_helper.php
deleted file mode 100644
index 443701ee..00000000
--- a/includes/helper/session_helper.php
+++ /dev/null
@@ -1,30 +0,0 @@
-<?php
-/**
- * Set lifetime of php session.
- *
- * @param int $lifetime
- *          Lifetime in minutes
- * @param string $application_name
- *          Name of the application
- */
-function session_lifetime($lifetime, $application_name) {
-  // Set session save path and name
-  $session_save_path = '/tmp/' . $application_name;
-  if (! file_exists($session_save_path))
-    mkdir($session_save_path);
-  if (file_exists($session_save_path))
-    session_save_path($session_save_path);
-  session_name($application_name);
-  
-  // Set session lifetime
-  ini_set('session.gc_maxlifetime', $lifetime * 60);
-  ini_set('session.gc_probability', 1);
-  ini_set('session.gc_divisor', 100);
-  
-  // Cookie settings (lifetime)
-  ini_set('session.cookie_secure', ! (isset($_SERVER['HTTP_HOST']) && preg_match("/^localhost/", $_SERVER["HTTP_HOST"]) || isset($_GET['debug'])));
-  ini_set('session.use_only_cookies', true);
-  ini_set('session.cookie_lifetime', $lifetime * 60);
-}
-
-?>
\ No newline at end of file