diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 8fa3a721df8..c305d0e7c4d 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -6086,6 +6086,7 @@ let
     virtualbox = callPackage ../applications/virtualization/virtualbox {
       stdenv = stdenv_32bit;
       inherit (gnome) libIDL;
+      enableExtensionPack = config.virtualbox.enableExtensionPack or false;
     };
 
     virtualboxGuestAdditions = callPackage ../applications/virtualization/virtualbox/guest-additions { };