diff --git a/demos/fenneldemo.fnl b/demos/fenneldemo.fnl
index 4c3ff2304..c2c5f5a64 100644
--- a/demos/fenneldemo.fnl
+++ b/demos/fenneldemo.fnl
@@ -16,7 +16,7 @@
   (when (btn 1) (set y (+ y 1)))
   (when (btn 2) (set x (- x 1)))
   (when (btn 3) (set x (+ x 1)))
-  (cls 0)
+  (cls 13)
   (spr (+ 1 (* (// (% t 60) 30) 2))
        x y 14 3 0 0 2 2)
   (print "HELLO WORLD!" 84 84)