diff --git a/ScadBox.scad b/ScadBox.scad
index d8bf912..2647649 100644
--- a/ScadBox.scad
+++ b/ScadBox.scad
@@ -1,4 +1,4 @@
-$fn=20;
+$fn= $preview ? 32 : 64;
 
 /*[Part]*/
 // Select part to render