diff --git a/pkgs/os-specific/linux/shadow/default.nix b/pkgs/os-specific/linux/shadow/default.nix
index 303d95d3230e..93e8c4d0fbbc 100644
--- a/pkgs/os-specific/linux/shadow/default.nix
+++ b/pkgs/os-specific/linux/shadow/default.nix
@@ -7,5 +7,8 @@ stdenv.mkDerivation {
     url = http://losser.labs.cs.uu.nl/~armijn/.nix/shadow-4.0.16.tar.bz2;
     md5 = "1d91f7479143d1d705b94180c0d4874b";
   };
+  
   configureFlags = "--with-selinux=no";
+
+  postInstall = "rm $out/bin/groups"; # coreutils provides `groups'
 }