diff --git a/src/bezier.scad b/src/bezier.scad
index 667da796..832264f7 100644
--- a/src/bezier.scad
+++ b/src/bezier.scad
@@ -21,21 +21,22 @@ function bezier_coordinate(t, pn, n, i = 0) =
             bezier_coordinate(t, pn, n, i + 1));
         
 function _bezier_point(t, points) = 
+    let(n = len(points) - 1)
     [
         bezier_coordinate(
             t, 
             [points[0][0], points[1][0], points[2][0], points[3][0]], 
-            len(points) - 1
+            n
         ),
         bezier_coordinate(
-            t, 
+            t,  
             [points[0][1], points[1][1], points[2][1], points[3][1]], 
-            len(points) - 1
+            n
         ),
         bezier_coordinate(
             t, 
             [points[0][2], points[1][2], points[2][2], points[3][2]], 
-            len(points) - 1
+            n
         )
     ];