diff --git a/src/functions.scad b/src/functions.scad
index 986ba52..e0de3e3 100644
--- a/src/functions.scad
+++ b/src/functions.scad
@@ -69,4 +69,4 @@ function surface_function(x,y) = (sin(acos(x/$3d_surface_size))) * sin(acos(y/$3
 // adds uniform rounding radius for round-anything polyRound
 function add_rounding(p, radius)=[for(i=[0:len(p)-1])[p[i].x,p[i].y, radius]];
 // computes millimeter length from unit length
-function unit_length(length) = unit * (length - 1) + 18.16;
+function unit_length(length) = $unit * (length - 1) + 18.16;
diff --git a/src/key.scad b/src/key.scad
index ce16e07..3d3cf96 100644
--- a/src/key.scad
+++ b/src/key.scad
@@ -81,9 +81,6 @@ module _dish(inverted=$inverted_dish) {
   translate([$dish_offset_x,0,0]) color($secondary_color) 
   dish(top_total_key_width() + $dish_overdraw_width, top_total_key_height() + $dish_overdraw_height, $dish_depth, inverted);
 }
-// just to DRY up the code
-module _dish() {
-}
 
 // puts its children at each keystem position provided
 module keystem_positions(positions) {
diff --git a/src/shapes/ISO_enter.scad b/src/shapes/ISO_enter.scad
index aded37a..ebcb137 100644
--- a/src/shapes/ISO_enter.scad
+++ b/src/shapes/ISO_enter.scad
@@ -19,8 +19,6 @@ module ISO_enter_shape(size, delta, progress){
 
   delta = delta / 2;
 
-  delta = delta / 2;
-
   pointArray = [
       [                   0-delta.x,                     0-delta.y], // top right
       [                   0-delta.x,               -height+delta.y], // bottom right