diff --git a/pkgs/tools/X11/virtualgl/lib.nix b/pkgs/tools/X11/virtualgl/lib.nix
index 2df037229ea..6b93c6432c3 100644
--- a/pkgs/tools/X11/virtualgl/lib.nix
+++ b/pkgs/tools/X11/virtualgl/lib.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
     sha256 = "1mnpljmx8nxnmpbx4ja430b3y535wkz185qknsxmk27yz4dbmm8l";
   };
 
-  cmakeFlags = [ "-DVGL_SYSTEMFLTK=1" "-DTJPEG_LIBRARY=${libjpeg_turbo}/lib/libturbojpeg.so" ];
+  cmakeFlags = [ "-DVGL_SYSTEMFLTK=1" "-DTJPEG_LIBRARY=${libjpeg_turbo.out}/lib/libturbojpeg.so" ];
 
   makeFlags = [ "PREFIX=$(out)" ];