diff --git a/pkgs/development/libraries/vulkan-loader/default.nix b/pkgs/development/libraries/vulkan-loader/default.nix
index 69a1b9014ab..04266361ea5 100644
--- a/pkgs/development/libraries/vulkan-loader/default.nix
+++ b/pkgs/development/libraries/vulkan-loader/default.nix
@@ -28,10 +28,6 @@ stdenv.mkDerivation rec {
 
   outputs = [ "out" "dev" ];
 
-  postInstall = ''
-    cp -r "${vulkan-headers}/include" "$dev"
-  '';
-
   meta = with stdenv.lib; {
     description = "LunarG Vulkan loader";
     homepage    = https://www.lunarg.com;