--- trunk/Estraier.pm	2006/01/28 17:58:22	96
+++ trunk/Estraier.pm	2006/01/28 18:19:47	97
@@ -321,7 +321,7 @@
 	my $draft;
 
 	foreach my $attr_name (sort keys %{ $self->{attrs} }) {
-		next unless(my $v = $self->{attrs}->{$attr_name});
+		next unless defined(my $v = $self->{attrs}->{$attr_name});
 		$draft .= $attr_name . '=' . $v . "\n";
 	}