diff --git a/pkgs/tools/networking/tinc/default.nix b/pkgs/tools/networking/tinc/default.nix
index dadadc085205..b42b364f605b 100644
--- a/pkgs/tools/networking/tinc/default.nix
+++ b/pkgs/tools/networking/tinc/default.nix
@@ -25,6 +25,6 @@ stdenv.mkDerivation rec {
       authentication, compression and ethernet bridging.
     '';
     homepage="http://www.tinc-vpn.org/";
-    license = "gpl2Plus";
+    license = stdenv.lib.licenses.gpl2;
   };
 }