diff --git a/UI/Templates/MailerUI/UIxMailEditor.wox b/UI/Templates/MailerUI/UIxMailEditor.wox
index 3dab61156..b5fe79da3 100644
--- a/UI/Templates/MailerUI/UIxMailEditor.wox
+++ b/UI/Templates/MailerUI/UIxMailEditor.wox
@@ -115,7 +115,7 @@
       </div>
       <div id="fileupload">
         <ul id="attachments">
-          <li class="attachButton"><span class="button fileinput-button"><span><img rsrc:src="title_attachment_14x14.png" /> <var:string label:value="Attach"/></span><input id="fileUpload" type="file" name="attachments" const:multiple="multiple"/></span></li>
+          <li class="attachButton"><span class="button fileinput-button"><span><img rsrc:src="title_attachment_14x14.png" /> <var:string label:value="Attach"/></span><input id="fileUpload" type="file" name="attachments" tabindex="-1" multiple="multiple"/></span></li>
           <var:foreach list="attachmentAttrs" item="attachment"
           ><li class="progressDone" var:data-filename="attachment.filename">
             <i class="icon-attachment"><!-- icon --></i><a var:href="attachment.url" target="_new"><var:string value="attachment.filename"/></a><span class="muted">(<var:string value="attachment.size" formatter="sizeFormatter" />)</span>