diff --git a/mail/base/skin/jar.mn b/mail/base/skin/jar.mn
index 10ed06d48e79..b5784da71af7 100644
--- a/mail/base/skin/jar.mn
+++ b/mail/base/skin/jar.mn
@@ -11,7 +11,6 @@ classic.jar:
 +   skin/classic/messenger/mailWindow1.css          (mailWindow1.css)
 +   skin/classic/messenger/junkMail.css             (junkMail.css)
 +   skin/classic/messenger/folderMenus.css          (folderMenus.css)
-+   skin/classic/messenger/folderPane.css           (folderPane.css)
 +   skin/classic/messenger/subscribe.css            (subscribe.css)
     skin/classic/messenger/virtualFolderListDialog.css (virtualFolderListDialog.css)
 +   skin/classic/messenger/searchDialog.css         (searchDialog.css)