diff --git a/customizer.scad b/customizer.scad
index f3b3190..19b1ba5 100644
--- a/customizer.scad
+++ b/customizer.scad
@@ -3469,7 +3469,7 @@ module rounded_shape() {
       // half minkowski in the z direction
       color($primary_color) shape_hull($minkowski_radius * 2, $minkowski_radius/2, $inverted_dish ? 2 : 0);
       /* cube($minkowski_radius); */
-      sphere(r=$minkowski_radius, $fn=48);
+      sphere(r=$minkowski_radius, $fn=$minkowski_facets);
     }
   }
   /* %envelope(); */
diff --git a/src/key.scad b/src/key.scad
index d1efedd..f8ecc95 100644
--- a/src/key.scad
+++ b/src/key.scad
@@ -37,7 +37,7 @@ module rounded_shape() {
       // half minkowski in the z direction
       color($primary_color) shape_hull($minkowski_radius * 2, $minkowski_radius/2, $inverted_dish ? 2 : 0);
       /* cube($minkowski_radius); */
-      sphere(r=$minkowski_radius, $fn=48);
+      sphere(r=$minkowski_radius, $fn=$minkowski_facets);
     }
   }
   /* %envelope(); */