diff --git a/src/BMailTemplate.php b/src/BMailTemplate.php
index 1bed43f..6913c33 100644
--- a/src/BMailTemplate.php
+++ b/src/BMailTemplate.php
@@ -9,7 +9,7 @@ class BMailTemplate implements \JsonSerializable
      *
      * @var string
      */
-    public $template;
+    public $template_id;
 
     /**
      * The sender for the message
@@ -39,9 +39,9 @@ class BMailTemplate implements \JsonSerializable
      */
     public $parameters = [];
 
-    public function __construct(string $template)
+    public function __construct(string $template_id)
     {
-        $this->template = $template;
+        $this->template_id = $template_id;
     }
 
     /**
@@ -155,7 +155,7 @@ class BMailTemplate implements \JsonSerializable
     public function toArray(): array
     {
         return [
-            'template' => $this->template,
+            'template_id' => $this->template_id,
             'sender' => $this->sender,
             'replyTo' => $this->replyTo,
             'recipients' => $this->recipients,