diff --git a/pkgs/tools/X11/bumblebee/default.nix b/pkgs/tools/X11/bumblebee/default.nix
index 803fd0dd850..e58aa7042d0 100644
--- a/pkgs/tools/X11/bumblebee/default.nix
+++ b/pkgs/tools/X11/bumblebee/default.nix
@@ -46,7 +46,7 @@ let
   bbdPath = lib.makeBinPath [ kmod xorgserver ];
   bbdLibs = lib.makeLibraryPath [ libX11 libXext ];
 
-  xmodules = lib.concatStringsSep "," (map (x: "${x}/lib/xorg/modules") ([ xorgserver ] ++ lib.optional (!useNvidia) xf86videonouveau));
+  xmodules = lib.concatStringsSep "," (map (x: "${x.out or x}/lib/xorg/modules") ([ xorgserver ] ++ lib.optional (!useNvidia) xf86videonouveau));
 
 in stdenv.mkDerivation rec {
   name = "bumblebee-${version}";