diff --git a/dl/mktable.pl b/dl/mktable.pl
index e199d04dde..3ffb7f7657 100755
--- a/dl/mktable.pl
+++ b/dl/mktable.pl
@@ -116,6 +116,9 @@ sub show {
             print "<br>\n";
         }
         my $r= $osmap{$_};
+        if(!$r) {
+            $r = $_;
+        }
         my $anch=$_;
         $anch =~ s/[^a-zA-Z0-9]//g;
         print "<a href=\"#$anch\">$r</a>";