diff --git a/pkgs/development/libraries/libmp3splt/default.nix b/pkgs/development/libraries/libmp3splt/default.nix
index af8297e98549..52072000115c 100644
--- a/pkgs/development/libraries/libmp3splt/default.nix
+++ b/pkgs/development/libraries/libmp3splt/default.nix
@@ -19,5 +19,6 @@ stdenv.mkDerivation rec {
     description = "Utility to split mp3, ogg vorbis and FLAC files without decoding";
     maintainers = with maintainers; [ bosu ];
     platforms   = platforms.unix;
+    license = licenses.gpl2;
   };
 }