diff --git a/pkgs/applications/audio/munt/mt32emu-smf2wav.nix b/pkgs/by-name/mt/mt32emu-smf2wav/package.nix
similarity index 68%
rename from pkgs/applications/audio/munt/mt32emu-smf2wav.nix
rename to pkgs/by-name/mt/mt32emu-smf2wav/package.nix
index a32c76f77ba2..ea3bd25ef941 100644
--- a/pkgs/applications/audio/munt/mt32emu-smf2wav.nix
+++ b/pkgs/by-name/mt/mt32emu-smf2wav/package.nix
@@ -8,17 +8,14 @@
   pkg-config,
 }:
 
-let
-  char2underscore = char: str: lib.replaceStrings [ char ] [ "_" ] str;
-in
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "mt32emu-smf2wav";
   version = "1.9.0";
 
   src = fetchFromGitHub {
     owner = "munt";
     repo = "munt";
-    rev = "${char2underscore "-" pname}_${char2underscore "." version}";
+    rev = "mt32emu_smf2wav_${lib.replaceString "." "_" finalAttrs.version}";
     sha256 = "sha256-XGds9lDfSiY0D8RhYG4TGyjYEVvVYuAfNSv9+VxiJEs=";
   };
 
@@ -41,12 +38,12 @@ stdenv.mkDerivation rec {
     "-Dmunt_WITH_MT32EMU_SMF2WAV=ON"
   ];
 
-  meta = with lib; {
+  meta = {
     homepage = "https://munt.sourceforge.net/";
     description = "Produces a WAVE file from a Standard MIDI file (SMF)";
     mainProgram = "mt32emu-smf2wav";
-    license = with licenses; [ gpl3Plus ];
-    maintainers = with maintainers; [ OPNA2608 ];
-    platforms = platforms.all;
+    license = with lib.licenses; [ gpl3Plus ];
+    maintainers = with lib.maintainers; [ OPNA2608 ];
+    platforms = lib.platforms.all;
   };
-}
+})
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 8abee87bb687..f0401cffebfb 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -11409,8 +11409,6 @@ with pkgs;
 
   mt32emu-qt = libsForQt5.callPackage ../applications/audio/munt/mt32emu-qt.nix { };
 
-  mt32emu-smf2wav = callPackage ../applications/audio/munt/mt32emu-smf2wav.nix { };
-
   noson = libsForQt5.callPackage ../applications/audio/noson { };
 
   pass2csv = python3Packages.callPackage ../tools/security/pass2csv { };