diff --git a/pkgs/applications/audio/keyfinder/default.nix b/pkgs/applications/audio/keyfinder/default.nix
index 187d3a58b171..19433466ec3b 100644
--- a/pkgs/applications/audio/keyfinder/default.nix
+++ b/pkgs/applications/audio/keyfinder/default.nix
@@ -16,13 +16,10 @@ stdenv.mkDerivation rec {
 
   postPatch = ''
     substituteInPlace is_KeyFinder.pro \
-       --replace "keyfinder.0" "keyfinder" \
        --replace "-stdlib=libc++" "" \
        --replace "\$\$[QT_INSTALL_PREFIX]" "$out"
   '';
 
-  enableParallelBuilding = true;
-
   meta = with lib; {
     description = "Musical key detection for digital audio (graphical UI)";
     longDescription = ''