diff -Nur e-smith-manager-2.8.0/root/etc/e-smith/web/common/cgi-bin/logout e-smith-manager-2.8.0_bz9527/root/etc/e-smith/web/common/cgi-bin/logout
--- e-smith-manager-2.8.0/root/etc/e-smith/web/common/cgi-bin/logout	2016-02-05 23:38:13.000000000 +0100
+++ e-smith-manager-2.8.0_bz9527/root/etc/e-smith/web/common/cgi-bin/logout	2016-06-01 08:45:08.496950288 +0200
@@ -35,8 +35,7 @@
 my ($server_name, $server_port) = split /:/, $q->http('X-Forwarded-Host') || $ENV{HTTP_HOST};
 #warn "servername is $server_name; HOST is $ENV{HTTP_HOST}\n";
 $server_name ||= $ENV{SERVER_NAME};
-$server_port ||= $ENV{SERVER_PORT};
-$server_port ( $server_name eq 'localhost' ) ? '80' : '443';
+$server_port = ( $server_name eq 'localhost' ) ? '80' : '443';
 my $AUTH_DOMAIN = $server_name;
 my $back = $q->cookie($at->back_cookie_name) if $at->back_cookie_name;
 $back ||= $q->param($at->back_arg_name) if $at->back_arg_name;