diff --git a/nixos/modules/config/fonts/fonts.nix b/nixos/modules/config/fonts/fonts.nix
index ac804bef7fe..49b1e1d42a3 100644
--- a/nixos/modules/config/fonts/fonts.nix
+++ b/nixos/modules/config/fonts/fonts.nix
@@ -10,6 +10,7 @@ with lib;
 
       # TODO: find another name for it.
       fonts = mkOption {
+        type = types.listOf types.path;
         example = [ pkgs.dejavu_fonts ];
         description = "List of primary font paths.";
         apply = list: list ++