diff --git a/_challenges/coding-in-the-cabana/005-marching-squares.md b/_challenges/coding-in-the-cabana/005-marching-squares.md
index 0bee5991b0..1289256626 100644
--- a/_challenges/coding-in-the-cabana/005-marching-squares.md
+++ b/_challenges/coding-in-the-cabana/005-marching-squares.md
@@ -30,7 +30,7 @@ variations:
   - name: "Cave Generation"
     lang: "p5js"
     folder: "P5_cave"
-    web_editor: z4U3Luf7ohEB4588QC
+    web_editor: z4U3Luf7o
   - name: "Metaballs Interpolation"
     lang: "p5js"
     folder: "P5_metaballs_interpolation"