diff --git a/lib/config/custom-build-vm.nix b/lib/config/custom-build-vm.nix
index ba9d6fd..7986e75 100644
--- a/lib/config/custom-build-vm.nix
+++ b/lib/config/custom-build-vm.nix
@@ -122,6 +122,8 @@ in {
                 vm
               else
                 let
+                  command = "${vm}/bin/run-${config.system.name}-vm";
+
                   prefix =
                     lib.concatStringsSep " " (
                       lib.optionals config.virtualisation.runAsRoot (
@@ -138,7 +140,7 @@ in {
                     name = "run-${config.system.name}-vm";
                     text = lib.strings.concatLines (
                       [
-                        "${prefix} ${vm}/bin/run-${config.system.name}-vm ${suffix}"
+                        "${prefix} ${command} ${suffix}"
                       ] ++ (
                         let
                           spice = config.virtualisation.qemu.spice;