diff --git a/pkgs/data/documentation/man-pages/default.nix b/pkgs/data/documentation/man-pages/default.nix
index 244e00ec70a..6d657472e66 100644
--- a/pkgs/data/documentation/man-pages/default.nix
+++ b/pkgs/data/documentation/man-pages/default.nix
@@ -21,6 +21,7 @@ stdenv.mkDerivation rec {
     description = "Linux development manual pages";
     homepage = https://www.kernel.org/doc/man-pages/;
     repositories.git = http://git.kernel.org/pub/scm/docs/man-pages/man-pages;
+    license = licenses.gpl2Plus;
     platforms = with platforms; unix;
     priority = 30; # if a package comes with its own man page, prefer it
   };