diff --git a/src/_impl/_golden_spiral_impl.scad b/src/_impl/_golden_spiral_impl.scad
index dd033fff..7a11c6bd 100644
--- a/src/_impl/_golden_spiral_impl.scad
+++ b/src/_impl/_golden_spiral_impl.scad
@@ -19,9 +19,10 @@ function _fast_fibonacci(nth) =
     _fast_fibonacci_2_elems(nth)[0];
     
 function _remove_same_pts(pts1, pts2) = 
-    pts1[len(pts1) - 1] == pts2[0] ? 
-        concat(pts1, [for(i = 1; i < len(pts2); i = i + 1) pts2[i]]) : 
-        concat(pts1, pts2);    
+    concat(
+        pts1,
+        pts1[len(pts1) - 1] == pts2[0] ? [for(i = [1:len(pts2) - 1]) pts2[i]] : pts2
+    );
 
 function _golden_spiral_from_ls_or_eql_to(from, to, point_distance, rt_dir) = 
     let(