diff --git a/src/__private__/__lines_from.scad b/src/__private__/__lines_from.scad
index c35eaab8..59720652 100644
--- a/src/__private__/__lines_from.scad
+++ b/src/__private__/__lines_from.scad
@@ -1,7 +1,10 @@
 function __lines_from(pts, closed = false) = 
-    let(leng = len(pts))
+    let(
+        leng = len(pts),
+        endi = leng - 1
+    )
     concat(
-        [for(i = 0; i <= leng; i = i + 1) [pts[i], pts[i + 1]]], 
+        [for(i = 0; i < endi; i = i + 1) [pts[i], pts[i + 1]]], 
         closed ? [[pts[len(pts) - 1], pts[0]]] : []
     );
     
\ No newline at end of file