diff --git a/pkgs/games/the-powder-toy/default.nix b/pkgs/games/the-powder-toy/default.nix
index 5d240a9fe91b..703578c2d4e8 100644
--- a/pkgs/games/the-powder-toy/default.nix
+++ b/pkgs/games/the-powder-toy/default.nix
@@ -29,7 +29,8 @@ stdenv.mkDerivation rec {
     description = "A free 2D physics sandbox game";
     homepage = "http://powdertoy.co.uk/";
     platforms = [ "i686-linux" "x86_64-linux" "x86_64-darwin" ];
-    license = licenses.gpl3;
+    license = licenses.gpl3Plus;
     maintainers = with maintainers; [ abbradar siraben ];
+    mainProgram = "powder";
   };
 }