1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/tools/networking/netmask/default.nix b/pkgs/tools/networking/netmask/default.nix
index f564e09ba032e..008688a757c54 100644
--- a/pkgs/tools/networking/netmask/default.nix
+++ b/pkgs/tools/networking/netmask/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
   meta = with lib; {
     homepage = "https://github.com/tlby/netmask";
     description = "An IP address formatting tool ";
-    license = licenses.gpl2;
+    license = licenses.gpl2Plus;
     platforms = platforms.linux;
     maintainers = [ maintainers.jensbin ];
     mainProgram = "netmask";