diff --git a/pkgs/development/libraries/cosmopolitan/default.nix b/pkgs/development/libraries/cosmopolitan/default.nix
index 39443a77d9fb..6e3140fa5f0f 100644
--- a/pkgs/development/libraries/cosmopolitan/default.nix
+++ b/pkgs/development/libraries/cosmopolitan/default.nix
@@ -22,10 +22,6 @@ stdenv.mkDerivation rec {
   dontConfigure = true;
   dontFixup = true;
 
-  postPatch = ''
-    patchShebangs build/
-  '';
-
   installPhase = ''
     runHook preInstall
     mkdir -p $out/{include,lib}