diff --git a/pkgs/applications/audio/pt2-clone/default.nix b/pkgs/applications/audio/pt2-clone/default.nix
index b8775bc23532..bd18a9c0e8fb 100644
--- a/pkgs/applications/audio/pt2-clone/default.nix
+++ b/pkgs/applications/audio/pt2-clone/default.nix
@@ -6,14 +6,14 @@
 , SDL2
 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "pt2-clone";
   version = "1.66.1";
 
   src = fetchFromGitHub {
     owner = "8bitbubsy";
     repo = "pt2-clone";
-    rev = "v${version}";
+    rev = "v${finalAttrs.version}";
     sha256 = "sha256-j7VPC1sj1Q+wL2TBgv06uYLPqym8F57HG1SRvj0Ggeo=";
   };
 
@@ -40,5 +40,4 @@ stdenv.mkDerivation rec {
     # > This code is NOT big-endian compatible
     platforms = platforms.littleEndian;
   };
-}
-
+})