diff --git a/pkgs/development/libraries/physics/geant4/default.nix b/pkgs/development/libraries/physics/geant4/default.nix
index ccc96a1aed3d..58fc0c07cd5b 100644
--- a/pkgs/development/libraries/physics/geant4/default.nix
+++ b/pkgs/development/libraries/physics/geant4/default.nix
@@ -29,7 +29,7 @@
 
 # For enableQt, enableXM, enableOpenGLX11, enableRaytracerX11.
 , libGLU, libGL
-, xlibsWrapper
+, libXext
 , libXmu
 
 # For enablePython
@@ -88,7 +88,7 @@ stdenv.mkDerivation rec {
   ];
   dontWrapQtApps = true; # no binaries
 
-  buildInputs = [ libGLU xlibsWrapper libXmu ]
+  buildInputs = [ libGLU libXext libXmu ]
     ++ lib.optionals enableInventor [ libXpm coin3d soxt motif ]
     ++ lib.optionals enablePython [ boost_python python3 ];