diff --git a/src/util/sort.scad b/src/util/sort.scad
index ce3bbdf4..7c4c4c46 100644
--- a/src/util/sort.scad
+++ b/src/util/sort.scad
@@ -1,19 +1,16 @@
-function _sort(pts, i) = 
-    let(leng = len(pts))
-    leng <= 1 ? pts : 
+function _sort(lt, i) = 
+    let(leng = len(lt))
+    leng <= 1 ? lt : 
         let(
-            pivot = pts[0],
-            before = [for(j = 1; j < leng; j = j + 1) if(pts[j][i] < pivot[i]) pts[j]],
-            after =  [for(j = 1; j < leng; j = j + 1) if(pts[j][i] >= pivot[i]) pts[j]]
+            pivot = lt[0],
+            before = [for(j = 1; j < leng; j = j + 1) if(lt[j][i] < pivot[i]) lt[j]],
+            after =  [for(j = 1; j < leng; j = j + 1) if(lt[j][i] >= pivot[i]) lt[j]]
         )
         concat(_sort(before, i), [pivot], _sort(after, i));
 
-function sort(points, by, idx = -1) =
+function sort(lt, by, idx = -1) =
     let(
-        i = by == "x" ? 0 : (
-            by == "y" ? 1 : (
-                by == "z" ? 2 : idx
-            )
-        )
+        dict = [["x", 0], ["y", 1], ["z", 0], ["idx", idx]],
+        i = dict[search(by, dict)[0]][1]
     )
-    _sort(points, i);
\ No newline at end of file
+    _sort(lt, i);
\ No newline at end of file