diff --git a/nixos/modules/virtualisation/proxmox-image.nix b/nixos/modules/virtualisation/proxmox-image.nix
index 6a4220fd265c..c66a4f178ec7 100644
--- a/nixos/modules/virtualisation/proxmox-image.nix
+++ b/nixos/modules/virtualisation/proxmox-image.nix
@@ -135,10 +135,11 @@ with lib;
     cfgLine = name: value: ''
       ${name}: ${builtins.toString value}
     '';
+    virtio0Storage = builtins.head (builtins.split ":" cfg.qemuConf.virtio0);
     cfgFile = fileName: properties: pkgs.writeTextDir fileName ''
       # generated by NixOS
       ${lib.concatStrings (lib.mapAttrsToList cfgLine properties)}
-      #qmdump#map:virtio0:drive-virtio0:local-lvm:raw:
+      #qmdump#map:virtio0:drive-virtio0:${virtio0Storage}:raw:
     '';
     inherit (cfg) partitionTableType;
     supportEfi = partitionTableType == "efi" || partitionTableType == "hybrid";