diff --git a/auth.php b/auth.php
index 84fd15b..e3ff4c6 100644
--- a/auth.php
+++ b/auth.php
@@ -197,7 +197,7 @@ private function is_master_password($userpassword) {
                     $this->log(__FUNCTION__ . " - IP address is not in the whitelist: ". getremoteaddr());
                 }
             } else {
-                $this->log(__FUNCTION__ . " - is not master password or has been expired: '{$userpassword}'");
+                $this->log(__FUNCTION__ . ' - submitted master password is invalid or has expired');
             }
         } else {
             $this->log(__FUNCTION__ . " - master password is not enabled in config.php");