diff --git a/php/classes/Guest.php b/php/classes/Guest.php
index 1e5b3b1..a23e547 100644
--- a/php/classes/Guest.php
+++ b/php/classes/Guest.php
@@ -10,12 +10,12 @@ class Guest {
     private $guestXml, $guestXmlFile, $xp, $root;
     public  $Id, $Start, $Ip, $email;
 
-    function __construct($Ip_, $email_){
+    function __construct($Ip_, $email_ = null){
       
-        if($email_ != null) {
+        if($email_) {
            $this->Start = getdate();
            $this->Ip = $Ip_;
-           $this->email = $email_;
+           $this->email = $email_;  
           }
          else {
              $this->Id = substr($Ip_,strlen("guest"));
@@ -31,7 +31,7 @@ class Guest {
             $this->guestXml->load($this->guestXmlFile);
             $this->root = $this->guestXml->getElementsByTagName("guests")->item(0);
         }
-        $this->xp = new domxpath($this->guestXml);                     
+        $this->xp = new domxpath($this->guestXml);  
     }
 
     private function generateXML() {
--
libgit2 0.21.2