diff --git a/.settings_extra.php b/.settings_extra.php
index 7f711bd2c0694f730cbbf12fe776cdaf2fa21998..8c0a89ea965b0ef3abc803a017f7655519b02f67 100644
--- a/.settings_extra.php
+++ b/.settings_extra.php
@@ -13,7 +13,6 @@ $settings = [
     ],
     'session' => [
         'value' => [
-            'lifetime' => 14400,
             'handlers' => [
                 'general' => [
                     'type' => 'memcache',