diff -Nur e-smith-hosts-2.4.0/root/usr/share/perl5/vendor_perl/esmith/FormMagick/Panel/hostentries.pm e-smith-hosts-2.4.0_bz9177/root/usr/share/perl5/vendor_perl/esmith/FormMagick/Panel/hostentries.pm
--- e-smith-hosts-2.4.0/root/usr/share/perl5/vendor_perl/esmith/FormMagick/Panel/hostentries.pm	2016-01-06 16:40:35.746506087 +0100
+++ e-smith-hosts-2.4.0_bz9177/root/usr/share/perl5/vendor_perl/esmith/FormMagick/Panel/hostentries.pm	2016-01-06 16:41:10.088504130 +0100
@@ -428,7 +428,7 @@
         return $self->error('HOSTNAME_VALIDATOR_ERROR');
     }
 
-    unless ( $comment =~ /^([a-zA-Z0-9][\_\.\-,A-Za-z0-9\s]*)$/ )
+    unless ( $comment =~ /^([a-zA-Z0-9][\_\.\-,A-Za-z0-9\s]*)$/ || $comment eq '' )
     {
         return $self->error('HOSTNAME_COMMENT_ERROR');
     }