Email symbol in Lyx Document

[colden]

Hello,
I try to get the emailsymbol from the marvosym package into a LyX
document (cv).
I do the following:
1. in the LaTeX Preamble for the document I write:
   \usepackage{marvosym}
2. where the symbol should be in my document I write in ERT:
   \Email
This does not work in my headline left or right ("Kopfzeile" in German),
where I have put my contact information. It works anywhere else in the
document though

What can I do to make it work up there?
Thanks a lot
SK