diff --git a/nixos/modules/virtualisation/build-vm.nix b/nixos/modules/virtualisation/build-vm.nix
index 3baa84cce018..4a4694950f98 100644
--- a/nixos/modules/virtualisation/build-vm.nix
+++ b/nixos/modules/virtualisation/build-vm.nix
@@ -52,4 +52,7 @@ in
     };
 
   };
+
+  # uses extendModules
+  meta.buildDocsInSandbox = false;
 }