diff --git a/skins/larry/templates/mail.html b/skins/larry/templates/mail.html
index 16b12a11c..7ef12bfdb 100644
--- a/skins/larry/templates/mail.html
+++ b/skins/larry/templates/mail.html
@@ -113,7 +113,7 @@
 <div id="mailview-bottom" class="uibox">
 
 <div id="mailpreviewframe">
-<roundcube:object name="messagecontentframe" id="messagecontframe" style="width:100%; height:100%; border:none;" src="/watermark.html" />
+<roundcube:object name="messagecontentframe" id="messagecontframe" style="width:100%; height:100%" frameborder="0" src="/watermark.html" />
 </div>
 
 <roundcube:object name="message" id="message" class="statusbar" />