diff --git a/Message/WindowsphoneMessage.php b/Message/WindowsphoneMessage.php
index 5a54291..a5c584a 100644
--- a/Message/WindowsphoneMessage.php
+++ b/Message/WindowsphoneMessage.php
@@ -38,6 +38,8 @@ public function getDeviceIdentifier()
     public function setDeviceIdentifier($identifier)
     {
         $this->identifier = $identifier;
+        
+        return $this;
     }
 
     public function getMessageBody()
@@ -51,6 +53,8 @@ public function getMessageBody()
     public function setMessage($message)
     {
         $this->text2 = $message;
+        
+        return $this;
     }
 
     public function setData($data)