diff --git a/examples/typebound_overloading.pl b/examples/typebound_overloading.pl
index 6ca0363..755bc55 100755
--- a/examples/typebound_overloading.pl
+++ b/examples/typebound_overloading.pl
@@ -7,10 +7,20 @@ use Math::MatrixReal;
 my $matrix = Math::MatrixReal->new_from_rows([[3,6,9]]);
 my $a = (2/3) * $matrix;
 my $b = 2 * $matrix / 3;
+my $c = 2 * (+$matrix) / 3;
+my $d = (2/3) * (+$matrix);
+
 
 print "\$a is a " . (ref $a) . "\n";
 print "\$b is a " . (ref $b) . "\n";
+print "\$c is a " . (ref $c) . "\n";
+print "\$d is a " . (ref $d) . "\n";
 print "\$a=\n";
 print $a;
 print "\$b=\n";
 print $b;
+print "\$c=\n";
+print $c;
+print "\$d=\n";
+print $d;
+