diff --git a/pkgs/applications/audio/fluidsynth/default.nix b/pkgs/applications/audio/fluidsynth/default.nix
index 8727c49398e4..d40544a0fa40 100644
--- a/pkgs/applications/audio/fluidsynth/default.nix
+++ b/pkgs/applications/audio/fluidsynth/default.nix
@@ -21,6 +21,7 @@ with versionMap.${version};
 
 stdenv.mkDerivation  rec {
   name = "fluidsynth-${fluidsynthVersion}";
+  version = fluidsynthVersion;
 
   src = fetchFromGitHub {
     owner = "FluidSynth";