diff --git a/pkgs/applications/audio/mid2key/default.nix b/pkgs/applications/audio/mid2key/default.nix
index 0a5aecfecb0f..d4af7108c159 100644
--- a/pkgs/applications/audio/mid2key/default.nix
+++ b/pkgs/applications/audio/mid2key/default.nix
@@ -7,12 +7,10 @@ stdenv.mkDerivation rec {
   src = fetchFromGitHub {
     owner = "dnschneid";
     repo = "mid2key";
-    rev = "v${version}";
-    sha256 = "0j2vsjvdgx51nd1qmaa18mcy0yw9pwrhbv2mdwnf913bwsk4y904";
+    rev = "r${version}";
+    sha256 = "Zo0mqdBJ1JKD9ZCA8te3f5opyYslFncYcx9iuXq2B9g=";
   };
 
-  unpackPhase = "tar xvzf $src";
-
   buildInputs = [ alsa-lib libX11 libXi libXtst xorgproto ];
 
   buildPhase = "make";