diff --git a/examples/maze/mobius_maze.scad b/examples/maze/mobius_maze.scad
index 79f0773a..0833070e 100644
--- a/examples/maze/mobius_maze.scad
+++ b/examples/maze/mobius_maze.scad
@@ -23,6 +23,6 @@ walls = maze_walls(blocks, rows, columns, block_width, bottom_border = false);
 
 size = [columns * block_width, rows * block_width];
 for(wall_pts = walls) {  
-   z_rotated = [for(pt = wall_pts) tf_ring(size, pt, radius, 360, angle)];
-   hull_polyline3d(z_rotated, wall_thickness);
+   transformed = [for(pt = wall_pts) tf_ring(size, pt, radius, 360, angle)];
+   hull_polyline3d(transformed, wall_thickness);
 }
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