diff --git a/buildroot-external/board/ova/barebox-env/boot/system0 b/buildroot-external/board/ova/barebox-env/boot/system0
index bb9b49271..8d32d2648 100644
--- a/buildroot-external/board/ova/barebox-env/boot/system0
+++ b/buildroot-external/board/ova/barebox-env/boot/system0
@@ -3,5 +3,7 @@
 global bootm.image="/mnt/disk1/boot/bzImage"
 
 global linux.bootargs.zswap="zswap.enabled=1 zswap.compressor=lz4 zswap.max_pool_percent=25 zswap.zpool=z3fold"
+global linux.bootargs.zram="zram.enabled=1 zram.num_devices=4"
+
 global linux.bootargs.dyn.root="root=/dev/sda2 rootfstype=squashfs ro"