diff --git a/notebook_nueva/tandy_lid.py b/notebook_nueva/tandy_lid.py
index 4a01618..64e40d3 100644
--- a/notebook_nueva/tandy_lid.py
+++ b/notebook_nueva/tandy_lid.py
@@ -22,7 +22,7 @@ board_cutout = cq.Sketch().trapezoid(
 kbd_cable_hole = cq.Sketch().trapezoid(20, 9, 90, mode="a").vertices().fillet(1)
 
 # y needs to be inverted because this is the top side, and there's 2 pillars we don't use
-dim.mounting_pillar_positions = [(x, -y) for x, y in dim.mounting_pillar_positions[:-2]]
+mounting_pillar_positions = [(x, -y) for x, y in dim.mounting_pillar_positions[:-2]]
 
 mounting_pillars = (
     cq.Sketch()