diff --git a/library/Icinga/Web/Session/PhpSession.php b/library/Icinga/Web/Session/PhpSession.php
index bef978c0b..094685fe4 100644
--- a/library/Icinga/Web/Session/PhpSession.php
+++ b/library/Icinga/Web/Session/PhpSession.php
@@ -78,7 +78,7 @@ class PhpSession extends Session
             }
         }
 
-        if (!is_writable(session_save_path())) {
+        if (ini_get('session.save_handler') === 'files' && !is_writable(session_save_path())) {
             throw new ConfigurationError('Can\'t save session');
         }