diff --git a/htdocs/login_form.php b/htdocs/login_form.php
index e8e02ca..669e915 100644
--- a/htdocs/login_form.php
+++ b/htdocs/login_form.php
@@ -45,7 +45,7 @@ printf('<tr><td><b>%s:</b></td></tr>',
 		($app['server']->getValue('login','attr') == 'dn' ? _('Login DN') : $_SESSION[APPCONFIG]->getFriendlyName($app['server']->getValue('login','attr'))));
 
 printf('<tr><td><input type="text" id="login" name="login" size="40" value="%s" /></td></tr>',
-	$app['server']->getValue('login','attr') == 'dn' ? $app['server']->getValue('login','bind_id') : '');
+	$app['server']->getValue('login','attr',false) == 'dn' ? $app['server']->getValue('login','bind_id') : '');
 
 echo '<tr><td colspan=2>&nbsp;</td></tr>';
 printf('<tr><td><b>%s:</b></td></tr>',_('Password'));
diff --git a/lib/ds.php b/lib/ds.php
index 1c2ff14..bd8cc5e 100644
--- a/lib/ds.php
+++ b/lib/ds.php
@@ -69,16 +69,18 @@ abstract class DS {
 	/**
 	 * Return a configuration value
 	 */
-	public function getValue($key,$setting) {
+	public function getValue($key,$setting,$fatal=true) {
 		if (isset($this->custom->{$key}[$setting]))
 			return $this->custom->{$key}[$setting];
 
 		elseif (isset($this->default->{$key}[$setting]) && array_key_exists('default',$this->default->{$key}[$setting]))
 			return $this->default->{$key}[$setting]['default'];
 
-		else {
+		elseif ($fatal)
 			debug_dump_backtrace("Error trying to get a non-existant value ($key,$setting)",1);
-		}
+
+		else
+			return null;
 	}
 
 	/**