diff --git a/modules/dev/editors/emacs/default.nix b/modules/dev/editors/emacs/default.nix
index 9978239c..a2e2bb24 100644
--- a/modules/dev/editors/emacs/default.nix
+++ b/modules/dev/editors/emacs/default.nix
@@ -31,6 +31,7 @@ in {
     type = mkOption {
       type = emacsType;
       default = "pkgs.emacs-unstable";
+      description = "pkgs. followed by the name of the emacs overlay package";
     };
   };