diff --git a/mxmount b/mxmount
index f16d13a..b27a336 100755
--- a/mxmount
+++ b/mxmount
@@ -153,6 +153,10 @@ sub parse_data {
            if($D->{label} =~ /^X/) {
                $D->{mountpoint} = 'X/' . $D->{label};
                $D->{label} = lc($D->{label});
+           } elsif($D->{label} =~ /^C/) {
+               $D->{mountpoint} = 'C/' . $D->{label};
+               $D->{label} = lc($D->{label});
+               $D->{noexport} = 1;
            } elsif($D->{label} =~ /^data(.*)/) {
                $D->{mountpoint} = $1;
            } else {