diff --git a/Debconf/ConfModule.pm b/Debconf/ConfModule.pm
index 8017202..20c084e 100644
--- a/Debconf/ConfModule.pm
+++ b/Debconf/ConfModule.pm
@@ -228,7 +228,9 @@ sub process_command {
 	my $this=shift;
 	
 	debug developer => "<-- $_";
-	return 1 unless defined && ! /^\s*#/; # Skip blank lines, comments.
+	return 1 unless defined; # Skip empty input.
+	return 1 if /^\s*$/ # Skip blank lines.
+	return 1 if /^\s*#/ # Skip comments.
 	chomp;
 	my ($command, @params);
 	if (defined $this->client_capb and grep { $_ eq 'escape' } @{$this->client_capb}) {