diff --git a/root/usr/share/mozilla-mcd/thunderbird.php b/root/usr/share/mozilla-mcd/thunderbird.php
index 8b611f7..2ac7093 100644
--- a/root/usr/share/mozilla-mcd/thunderbird.php
+++ b/root/usr/share/mozilla-mcd/thunderbird.php
@@ -25,6 +25,16 @@ else {
 }
 ?>
 
+// Linux / UNIX ?
+if(getenv("USER") != "") {
+   var path_sep = '/';
+   var path_profile = getenv("HOME");
+}
+// Windows ?
+else {
+   var path_sep = '\\';
+   var path_profile = getenv("USERPROFILE");
+}
 
 // Compte local
 <?php echo PREF;?>("mail.account.account1.server", "server1");
@@ -55,6 +65,7 @@ $server = 2;
 $accountlist = 'account1';
 $identities = ''
 ?>
+
 // Compte personnel
 <?php echo PREF;?>("mail.account.account2.server", "server<?php echo $server?>");
 <?php echo PREF;?>("mail.server.server2.hostname", "<?php echo IMAP_SERVER; ?>");
@@ -77,7 +88,7 @@ defaultPref("mail.identity.id<?php echo $id; ?>.fcc_folder", "imap://<?php echo
 defaultPref("mail.identity.id<?php echo $id; ?>.draft_folder", "imap://<?php echo $uid; ?>@<?php echo IMAP_SERVER; ?>/Drafts");
 defaultPref("mail.identity.id<?php echo $id; ?>.stationery_folder", "imap://<?php echo $uid; ?>@<?php echo IMAP_SERVER; ?>/Templates");
 defaultPref("mail.identity.id<?php echo $id; ?>.attach_signature", true);
-defaultPref("mail.identity.id<?php echo $id; ?>.sig_file-rel", "[ProfD]../../../../../signature/email.html");
+defaultPref("mail.identity.id<?php echo $id; ?>.sig_file", path_profile+path_sep+"signature"+path_sep+"email.html");
 <?php
 //$accountlist .= ',account' . $account;
 $identities .= ',id' . $id;