diff --git a/pkgs/tools/networking/jwhois/default.nix b/pkgs/tools/networking/jwhois/default.nix
index cd0821ef9ef5..be8e9e210d15 100644
--- a/pkgs/tools/networking/jwhois/default.nix
+++ b/pkgs/tools/networking/jwhois/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation {
   meta = {
     description = "A client for the WHOIS protocol allowing you to query the owner of a domain name";
     homepage = http://www.gnu.org/software/jwhois/;
-    license = "GPL";
-    platforms = stdenv.lib.platforms.linux;
+    license = stdenv.lib.licenses.gpl3;
+    platforms = stdenv.lib.platforms.unix;
   };
 }