diff --git a/README.md b/README.md
index 5acef17..2c36cdf 100644
--- a/README.md
+++ b/README.md
@@ -47,7 +47,7 @@ format | description
 --- | ---
 amazon | Amazon EC2 image
 azure | Microsoft azure image (Generation 1 / VHD)
-~~cloudstack~~ | qcow2 image for cloudstack. This module is broken, PRs welcome.
+cloudstack | qcow2 image for cloudstack. 
 do | Digital Ocean image
 docker | Docker image (uses systemd to run, probably only works in podman)
 gce | Google Compute image
diff --git a/formats-broken/cloudstack.nix b/formats/cloudstack.nix
similarity index 91%
rename from formats-broken/cloudstack.nix
rename to formats/cloudstack.nix
index e25a74d..ac1aad2 100644
--- a/formats-broken/cloudstack.nix
+++ b/formats/cloudstack.nix
@@ -9,6 +9,8 @@
     "${toString modulesPath}/virtualisation/cloudstack-config.nix"
   ];
 
+  fileSystems."/".fsType = lib.mkDefault "ext4";
+
   system.build.cloudstackImage = import "${toString modulesPath}/../lib/make-disk-image.nix" {
     inherit lib config pkgs;
     diskSize = 8192;