diff --git a/backend/Config.php b/backend/Config.php
index b9312412378f022334b0fc022b59df684f52fafd..6f28431ccfe10b43285a67f31acce96dc17249f7 100644
--- a/backend/Config.php
+++ b/backend/Config.php
@@ -18,7 +18,7 @@ class Config {
     }
 
     public static function createFromGlobals() {
-        if (isset(db_connector))
+        if (null !== db_connector)
             return new Config(path_prefix, db_connector, db_user, db_pass);
         else
             return new Config(path_prefix, 'pgsql:host=' . db_host . ';port=' . db_port . ';dbname=' . db_name . '', db_user, db_pass);
diff --git a/qrs_config.default.php b/qrs_config.default.php
index 836d63c78ca68c9b20d1928dac3bde44b5f1020f..fa29c937b5a1dfc6424f77f4043fba6f8ef41314 100644
--- a/qrs_config.default.php
+++ b/qrs_config.default.php
@@ -3,8 +3,8 @@ define('db_host', 'example.com');
 define('db_port', 5432);
 define('db_name', 'quassel');
 
-//Only use this if you know what you are doing
-//define('db_connector', '');
+//Only change this if you know what you are doing
+define('db_connector', null);
 
 define('db_user', 'quassel');
 define('db_pass', 'password');