diff --git a/Model/MailEvent.php b/Model/MailEvent.php
index 2ad23d8..b2a2484 100644
--- a/Model/MailEvent.php
+++ b/Model/MailEvent.php
@@ -190,11 +190,13 @@ private function setPdfAttachment($emailType, Message $message, $obj)
     private function setTACAttachment(Message $message, $tacPath)
     {
         list($filePath, $ext, $mimeType) = $this->getTacFile($tacPath);
+        $tacFilename = $this->dataHelper->getConfigGeneral('tac_filename');
+        $tacFilename = ((empty($tacFilename)) ? 'terms_and_conditions' : $tacFilename) . '.'. $ext;
         if($this->dataHelper->versionCompare("2.3")) {
             $attachment = new \Zend_Mime_Part(file_get_contents($filePath));
             $attachment->type = $mimeType;
             $attachment->disposition =  \Zend_Mime::DISPOSITION_ATTACHMENT;
-            $attachment->filename = 'terms_and_conditions.'. $ext;
+            $attachment->filename = $tacFilename;
             return $attachment;
         }
         else{
@@ -203,7 +205,7 @@ private function setTACAttachment(Message $message, $tacPath)
                 $mimeType,
                 \Zend_Mime::DISPOSITION_ATTACHMENT,
                 \Zend_Mime::ENCODING_BASE64,
-                'terms_and_conditions.' . $ext
+                $tacFilename
             );
         }
     }
diff --git a/etc/adminhtml/system.xml b/etc/adminhtml/system.xml
index 8461360..60ab93f 100644
--- a/etc/adminhtml/system.xml
+++ b/etc/adminhtml/system.xml
@@ -76,6 +76,10 @@
                         <field id="is_enabled_attach_tac">1</field>
                     </depends>
                 </field>
+                <field id="tac_filename" translate="label comment" type="text" sortOrder="90" showInDefault="1" showInWebsite="1" showInStore="1">
+                    <label>Terms and Conditions filename</label>
+                    <comment>Basename for attachment</comment>
+                </field>
             </group>
         </section>
     </system>
diff --git a/etc/config.xml b/etc/config.xml
index c50443d..f7505ed 100644
--- a/etc/config.xml
+++ b/etc/config.xml
@@ -28,6 +28,7 @@
             </module>
             <general>
                 <enabled>1</enabled>
+                <tac_filename>terms_and_conditions</tac_filename>
             </general>
         </mp_email_attachments>
     </default>