diff --git a/nixos/modules/virtualisation/virtualbox-guest.nix b/nixos/modules/virtualisation/virtualbox-guest.nix
index 9dda455e5d3..3d43ec0ff4c 100644
--- a/nixos/modules/virtualisation/virtualbox-guest.nix
+++ b/nixos/modules/virtualisation/virtualbox-guest.nix
@@ -38,6 +38,8 @@ optionalAttrs (pkgs.stdenv.isi686 || pkgs.stdenv.isx86_64) # ugly...
 
     boot.extraModulePackages = [ kernel.virtualboxGuestAdditions ];
 
+    boot.kernelModules = [ "vboxsf" ];
+
     users.extraGroups.vboxsf.gid = config.ids.gids.vboxsf;
 
     systemd.services.virtualbox =