diff --git a/perl/DXProtout.pm b/perl/DXProtout.pm
index c76569d8..f01a1481 100644
--- a/perl/DXProtout.pm
+++ b/perl/DXProtout.pm
@@ -385,7 +385,7 @@ sub _gen_pc92
 	}
 	for (@_) {
 		$s .= '^' . _encode_pc92_call($_, $ext);
-		$ext = 0;				# only the first slot has an ext.
+		$ext = 0 unless $sort eq 'A';				# only the first slot has an ext.
 	}
 	return $s . '^H99^';
 }
diff --git a/perl/Version.pm b/perl/Version.pm
index 55bcb950..8c8f5500 100644
--- a/perl/Version.pm
+++ b/perl/Version.pm
@@ -11,6 +11,6 @@ use vars qw($version $subversion $build);
 
 $version = '1.55';
 $subversion = '0';
-$build = '55';
+$build = '56';
 
 1;