diff --git a/pkgs/tools/networking/pptpd/default.nix b/pkgs/tools/networking/pptpd/default.nix
index d5464b97a335..4c29cd949ee6 100644
--- a/pkgs/tools/networking/pptpd/default.nix
+++ b/pkgs/tools/networking/pptpd/default.nix
@@ -21,5 +21,6 @@ stdenv.mkDerivation rec {
     description = "The PPTP Server for Linux";
     platforms   = platforms.linux;
     maintainers = with maintainers; [ obadz ];
+    license = licenses.gpl2;
   };
 }