diff --git a/mxmount b/mxmount
index d3db82b..6a24eec 100755
--- a/mxmount
+++ b/mxmount
@@ -62,6 +62,8 @@ system("exportfs -ra");
 sub add_data0_if_not_present {
     my $allmp = $D{$hostname};
 
+    $allmp = [] unless (defined $allmp);
+
     foreach my $mp (sort { $a->{mountpoint} cmp $b->{mountpoint} } @$allmp ) {
         if ($mp->{label} eq "data0") {
             return;