diff --git a/UI/Templates/MailerUI/UIxMailMainFrame.wox b/UI/Templates/MailerUI/UIxMailMainFrame.wox
index 120849196..e0aefb431 100644
--- a/UI/Templates/MailerUI/UIxMailMainFrame.wox
+++ b/UI/Templates/MailerUI/UIxMailMainFrame.wox
@@ -7,7 +7,7 @@
   xmlns:label="OGo:label"
   className="UIxPageFrame"
   title="title"
-  const:jsFiles="dtree.js,MailerUI+dTree.js">
+  const:jsFiles="dtree.js,MailerUIdTree.js">
   <script type="text/javascript">
     var textMailAccounts = '<var:string value="mailAccounts" const:escapeHTML="NO"/>';
     var textDefaultColumnsOrder = '<var:string value="defaultColumnsOrder" const:escapeHTML="NO"/>';
diff --git a/UI/WebServerResources/MailerUI+dTree.js b/UI/WebServerResources/MailerUIdTree.js
similarity index 100%
rename from UI/WebServerResources/MailerUI+dTree.js
rename to UI/WebServerResources/MailerUIdTree.js