diff --git a/src/polysections.scad b/src/polysections.scad
index 72043133..262d9ed7 100644
--- a/src/polysections.scad
+++ b/src/polysections.scad
@@ -15,12 +15,12 @@ module polysections(sections, triangles = "RADIAL") {
     module tri_sections(tri1, tri2) {
         polyhedron(
             points = concat(tri1, tri2),
-            faces = concat(
-                [[0, 1, 2]],
-                [[3, 4, 5]],
-                [for(i = [0:2]) [i, (i + 1) % 3, (i + 1) % 3 + 3]],
-                [for(i = [0:2]) [i, i % 3 + 3, (i + 1) % 3 + 3]]
-            )
+            faces = [
+                [0, 1, 2], 
+                [3, 4, 5], 
+                [0, 1, 4], [1, 2, 5], [2, 0, 3], 
+                [0, 3, 4], [1, 4, 5], [2, 5, 3]
+            ]
         );  
     }