diff --git a/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/generic.nix b/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/generic.nix
index 29a18f4ce69e..fc3c4c3c8410 100644
--- a/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/generic.nix
+++ b/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/generic.nix
@@ -3,7 +3,11 @@
 assert unzip != null;
 
 stdenv.mkDerivation {
-  inherit src name postInstall meta;
+  inherit src name postInstall;
   builder = ./builder.sh;
   buildInputs = [unzip];
+
+  meta = meta // {
+    platforms = stdenv.lib.platforms.unix;
+  };
 }