diff --git a/modules/system/font.nix b/modules/system/font.nix
index 83d3ce4..9855a2a 100644
--- a/modules/system/font.nix
+++ b/modules/system/font.nix
@@ -19,6 +19,9 @@ in {
     };
   };
 
+  # You can put your private ttf fonts into
+  # in $XDG_DATA_HOME/fonts, which for most users will resolve to ~/.local/share/fonts
+  # see https://nixos.wiki/wiki/Fonts
   config = mkIf cfg.enable {
 
     fonts = {