diff --git a/shapes3d.scad b/shapes3d.scad
index 1f0d71e4..e80ef9b1 100644
--- a/shapes3d.scad
+++ b/shapes3d.scad
@@ -3391,8 +3391,6 @@ function _make_octa_sphere(r) =
                         edge3[subdivs-col]  // Point on third edge is exact. (± FP rounding)
                     else  // Calculating interior point.
                         let(
-                            u1 = col / row,
-                            u2 = subdivs-row+col,
                             p1 = greater_arc_point(edge1[row], edge2[row], col/row),
                             p2 = greater_arc_point(edge1[row-col], edge3[row-col], col/(subdivs-row+col)),
                             p3 = greater_arc_point(edge2[col], edge3[subdivs-col], (row-col)/(subdivs-col))