diff --git a/pkgs/os-specific/darwin/DarwinTools/default.nix b/pkgs/os-specific/darwin/DarwinTools/default.nix
index 72a375028453..11e4c84395da 100644
--- a/pkgs/os-specific/darwin/DarwinTools/default.nix
+++ b/pkgs/os-specific/darwin/DarwinTools/default.nix
@@ -13,17 +13,17 @@ stdenv.mkDerivation rec {
     ./sw_vers-CFPriv.patch
   ];
 
-  postPatch = ''
-    substituteInPlace Makefile \
-      --replace gcc cc
-  '';
-
   configurePhase = ''
     export SRCROOT=.
     export SYMROOT=.
     export DSTROOT=$out
   '';
 
+  makeFlags = [
+    "CC=${stdenv.cc.targetPrefix}cc"
+    "STRIP=${stdenv.cc.targetPrefix}strip"
+  ];
+
   postInstall = ''
     mv $out/usr/* $out
     rmdir $out/usr