diff --git a/pkgs/development/libraries/arguments/default.nix b/pkgs/development/libraries/arguments/default.nix
index bacb7662386e..524e00dc5a76 100644
--- a/pkgs/development/libraries/arguments/default.nix
+++ b/pkgs/development/libraries/arguments/default.nix
@@ -26,6 +26,6 @@ stdenv.mkDerivation rec {
     description = "Library for argument handling for MINC programs";
     maintainers = with maintainers; [ bcdarwin ];
     platforms = platforms.unix;
-    license   = licenses.free;
+    license   = licenses.gpl2Plus;
   };
 }