diff --git a/.gitignore b/.gitignore
index 82f2b5d..772df01 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,7 @@
 .direnv
 result
 result-*
+nixos.qcow2
 
 terraform.tfstate.backup
 .terraform.tfstate.lock.info
diff --git a/vm/flake-module.nix b/vm/flake-module.nix
index 7106620..6fd7195 100644
--- a/vm/flake-module.nix
+++ b/vm/flake-module.nix
@@ -65,8 +65,6 @@
               ];
             in
             ''
-              NIXOS_DISK_IMAGE=/tmp/wiki-vm.qcow2
-              export NIXOS_DISK_IMAGE
               echo 'access the wiki after startup at http://localhost:4360'
               echo 'user: admin, password: nixos-wiki00'
               echo 'you can also SSH into the VM with: ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no root@localhost -p 2222'