diff --git a/pkgs/image/default.nix b/pkgs/image/default.nix
index ba783f7..4da5187 100644
--- a/pkgs/image/default.nix
+++ b/pkgs/image/default.nix
@@ -24,7 +24,7 @@ stdenvNoCC.mkDerivation (finalAttrs: {
   env = {
     # vfat options won't efi won't find the fs otherwise.
     SYSTEMD_REPART_MKFS_OPTIONS_VFAT = "-S 512 -c";
-    SYSTEMD_REPART_MKFS_OPTIONS_EROFS = "--all-root"; # -zlz4hc,level=12 -Efragments,dedupe,ztailpacking";
+    SYSTEMD_REPART_MKFS_OPTIONS_EROFS = "--all-root"; # -zlz4hc,12 -C1048576 -Efragments,dedupe,ztailpacking";
   };
 
   systemd = patosPkgs.systemd.out;