diff --git a/pkgs/tools/compression/bzip2/default.nix b/pkgs/tools/compression/bzip2/default.nix
index bb04049d8a66..0d8bfc6894e6 100644
--- a/pkgs/tools/compression/bzip2/default.nix
+++ b/pkgs/tools/compression/bzip2/default.nix
@@ -58,7 +58,7 @@ in stdenv.mkDerivation {
     ln -s bzip2 $out/bin/bzcat
   '';
 
-  patchPhase = ''
+  postPatch = ''
     substituteInPlace Makefile --replace CC=gcc CC=cc
     substituteInPlace Makefile-libbz2_so --replace CC=gcc CC=cc
   '';