diff --git a/lib/config/custom-build-vm.nix b/lib/config/custom-build-vm.nix
index 7acaae7..ec213e1 100644
--- a/lib/config/custom-build-vm.nix
+++ b/lib/config/custom-build-vm.nix
@@ -9,6 +9,16 @@
   };
 
   config = {
+    virtualisation =
+      let
+        vmConfig = {
+          boot.loader.efi.efiSysMountPoint = lib.mkVMOverride "/boot";
+        };
+      in {
+        vmVariant = vmConfig;
+        vmVariantWithBootLoader = vmConfig;
+      };
+
     # Replace native `qemu` with `remote-viewer`
     system.build =
       {