diff --git a/src/__comm__/_convex_hull3.scad b/src/__comm__/_convex_hull3.scad
index b9a46439..c485e879 100644
--- a/src/__comm__/_convex_hull3.scad
+++ b/src/__comm__/_convex_hull3.scad
@@ -120,8 +120,8 @@ function _convex_hull3(pts) =
                 [v0, v2, v3]
             ],
         init_vis = [for(i = [0:leng - 1]) [for(j = [0:leng - 1]) 0]],
-        faces = _all_faces(v0, v1, v2, v3, sorted, leng, init_vis, fst_tetrahedron),
-        reversed = [for(face = faces)
+        faces = _all_faces(v0, v1, v2, v3, sorted, leng, init_vis, fst_tetrahedron), // counter-clockwise
+        reversed = [for(face = faces)      // OpenSCAD prefers clockwise.
             [for(i = 2; i >= 0; i = i - 1)
                  face[i]]
         ]