diff --git a/pkgs/development/libraries/mesa/default.nix b/pkgs/development/libraries/mesa/default.nix
index 43934b2781e..e88cf3a095a 100644
--- a/pkgs/development/libraries/mesa/default.nix
+++ b/pkgs/development/libraries/mesa/default.nix
@@ -28,11 +28,6 @@ stdenv.mkDerivation {
 
   enableParallelBuilding = true;
 
-  # Remove swrast_dri.so.  If it's available, the X server will use
-  # it, but it doesn't work properly (giving corrupt output or
-  # crashing the server).  (NixOS/121)
-  postInstall = "rm -f $out/lib/dri/swrast_dri.so";
-
   passthru = { inherit libdrm; };
 
   meta = {