diff --git a/examples/lsystem3_collection.scad b/examples/lsystem3_collection.scad
index 6137722a..c0ca1f50 100644
--- a/examples/lsystem3_collection.scad
+++ b/examples/lsystem3_collection.scad
@@ -1,7 +1,7 @@
 use <experimental/lsystem3.scad>;
 use <hull_polyline3d.scad>;
 
-for(line = spring()) {
+for(line = vine()) {
     hull_polyline3d(
         [line[0], line[1]], 
         thickness = 0.25, 
@@ -45,7 +45,7 @@ function vine(n = 3, angle = 18, leng = 1, heading = 0, start = [0, 0, 0]) =
     let(
         axiom = "--F",
         rules = [
-            ["F", "/F[++F]-\F[--F]+//F"]
+            ["F", "/F[++F]-\\F[--F]+//F"]
         ]
     )
     lsystem3(axiom, rules, n, angle, leng, heading, start);