diff --git a/modules/virtualisation/qemu-vm.nix b/modules/virtualisation/qemu-vm.nix
index 6e4e372c1bfa..1c725d946f51 100644
--- a/modules/virtualisation/qemu-vm.nix
+++ b/modules/virtualisation/qemu-vm.nix
@@ -212,6 +212,7 @@ in
       }
       { mountPoint = "/nix/store";
         device = "/hostfs/nix/store";
+        fsType = "none";
         options = "bind";
         neededForBoot = true;
       }