diff --git a/webroot/img.php b/webroot/img.php
index 9b862ad..9dbc00a 100644
--- a/webroot/img.php
+++ b/webroot/img.php
@@ -233,7 +233,7 @@ $pwdType     = getConfig('password_type', 'text');
 $pwd         = get(array('password', 'pwd'), null);
 
 // Check if passwords match, if configured to use passwords
-$passwordMatch = false;
+$passwordMatch = null;
 if ($pwd) {
     switch($pwdType) {
         case 'md5':
@@ -245,6 +245,8 @@ if ($pwd) {
         case 'text':
             $passwordMatch = ($pwdConfig === $pwd);
             break;
+        default:
+            $passwordMatch = false;
     }
 }