diff --git a/lib/WebGUI/Image/Graph/Pie.pm b/lib/WebGUI/Image/Graph/Pie.pm
index c7d9e327d..ebf8b2ab6 100644
--- a/lib/WebGUI/Image/Graph/Pie.pm
+++ b/lib/WebGUI/Image/Graph/Pie.pm
@@ -1027,7 +1027,8 @@ Returns the thickness of the top of the pie in pixels. Defaults to 20 pixels.
 sub getTopHeight {
 	my $self = shift;
 
-	return $self->{_pieProperties}->{topHeight} || 20;
+	return 20 unless (defined $self->{_pieProperties}->{topHeight});
+	return $self->{_pieProperties}->{topHeight};
 }
 
 #-------------------------------------------------------------------