diff --git a/2d/dice-tower/dice-tower-cover.scad b/2d/dice-tower/dice-tower-cover.scad
index 158a9fb..506c4e1 100644
--- a/2d/dice-tower/dice-tower-cover.scad
+++ b/2d/dice-tower/dice-tower-cover.scad
@@ -34,7 +34,7 @@ module left_side() {
             translate([-rx, ry, 0]) circle(10);
          }
       }
-      translate([-rx, ry, 0]) circle(hole_diameter/2);
+      translate([-rx, ry, 0]) circle(hole_diameter/2, $fn=36);
    }
 }
 
@@ -48,7 +48,7 @@ module right_side() {
             translate([rx, ry, 0]) circle(10);
          }
       }
-      translate([rx, ry, 0]) circle(hole_diameter/2);
+      translate([rx, ry, 0]) circle(hole_diameter/2, $fn=36);
    }
 }