diff --git a/pkgs/development/libraries/soxt/default.nix b/pkgs/development/libraries/soxt/default.nix
index 5ea23aae8791..4e155f496ec2 100644
--- a/pkgs/development/libraries/soxt/default.nix
+++ b/pkgs/development/libraries/soxt/default.nix
@@ -1,4 +1,4 @@
-{ fetchhg, lib, stdenv, cmake, coin3d, motif, xlibsWrapper, libXmu, libGLU, libGL }:
+{ fetchhg, lib, stdenv, cmake, coin3d, motif, libXext, libXmu, libGLU, libGL }:
 
 stdenv.mkDerivation {
   pname = "soxt";
@@ -12,7 +12,7 @@ stdenv.mkDerivation {
   };
 
   nativeBuildInputs = [ cmake ];
-  buildInputs = [ coin3d motif xlibsWrapper libGLU libGL libXmu ];
+  buildInputs = [ coin3d motif libGLU libGL libXext libXmu ];
 
   meta = with lib; {
     homepage = "https://bitbucket.org/Coin3D/coin/wiki/Home";