diff --git a/scripts/prt-auf b/scripts/prt-auf
index 90e7b66..c3f121e 100755
--- a/scripts/prt-auf
+++ b/scripts/prt-auf
@@ -116,7 +116,7 @@ if (($action =~ /^(listinst|listorphans)/)
     my $cleandep = $depline;
     $cleandep =~ s/ .provided by .*// if ($action eq "deptree");
     $dep = (split / /, $cleandep)[-1];
-    next if (($seen{$dep}) and ($odepends{all}==0));
+    next if ((! $dep) or (($seen{$dep}) and ($odepends{all}==0)));
     $seen{$dep}=1;
     if ($action ne "quickdep") {
       $ind = (grep { $_ eq $dep } @installed) ? "[i]" : "[ ]";