diff --git a/examples/maze/twisted_maze.scad b/examples/maze/twisted_maze.scad
index 6c08ff15..2149e704 100644
--- a/examples/maze/twisted_maze.scad
+++ b/examples/maze/twisted_maze.scad
@@ -10,20 +10,15 @@ wall_thickness = 1;
 angle = 180;
 // $fn = 24;
 
-function y_twist(walls, angle, rows, columns, block_width) = 
-    let(size = [columns * block_width, rows * block_width])
-    [
-        for(wall_pts = walls) 
-            [for(pt = wall_pts) tf_y_twist(size, pt, angle)]
-    ];
-
 blocks = go_maze( 
     1, 1,   // starting point
     starting_maze(rows, columns),  
     rows, columns
 );
-    
 walls = maze_walls(blocks, rows, columns, block_width);
-for(wall_pts = y_twist(walls, angle, rows, columns, block_width)) {   
-   hull_polyline3d(wall_pts, wall_thickness);
+
+size = [columns * block_width, rows * block_width];
+for(wall_pts = walls) {  
+   transformed = [for(pt = wall_pts) tf_y_twist(size, pt, angle)];
+   hull_polyline3d(transformed, wall_thickness);
 }
\ No newline at end of file