diff --git a/options/desktop/dev/malloc-perturb.nix b/options/desktop/dev/malloc-perturb.nix
index cdf7d64..f2695a6 100644
--- a/options/desktop/dev/malloc-perturb.nix
+++ b/options/desktop/dev/malloc-perturb.nix
@@ -1,5 +1,5 @@
 _: {
     environment.sessionVariables = {
-        MALLOC_PERTURB_ = "$(($RANDOM % 255 + 1))";
+        MALLOC_PERTURB_ = "echo $(($(head -200 /dev/urandom | cksum | cut -f1 -d " ") % 255 + 1))";
     };
 }