diff --git a/pkgs/applications/audio/tagutil/default.nix b/pkgs/applications/audio/tagutil/default.nix
index 903537333fff..e5076188301a 100644
--- a/pkgs/applications/audio/tagutil/default.nix
+++ b/pkgs/applications/audio/tagutil/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
     zlib
   ];
 
-  prePatch = ''
+  postPatch = ''
     substituteInPlace CMakeLists.txt \
       --replace "-o aslr" ""
   '';