diff --git a/modules/app/email/autoload/email.el b/modules/app/email/autoload/email.el
index 232adfdad..7b2f017bc 100644
--- a/modules/app/email/autoload/email.el
+++ b/modules/app/email/autoload/email.el
@@ -40,6 +40,7 @@ default/fallback account."
         (setq-default mu4e-context-current context))
       context)))
 
+;; FIXME obsolete :email
 ;;;###autoload
 (def-setting! :email (label letvars &optional default-p)
   :obsolete set-email-account!
diff --git a/modules/feature/lookup/autoload/devdocs.el b/modules/feature/lookup/autoload/devdocs.el
index 6a046c648..5baf61cf4 100644
--- a/modules/feature/lookup/autoload/devdocs.el
+++ b/modules/feature/lookup/autoload/devdocs.el
@@ -11,6 +11,7 @@ See `devdocs-alist' for the defaults. "
     (dolist (mode (doom-enlist modes))
       (setf (alist-get mode devdocs-alist) docset))))
 
+;; FIXME obsolete :devdocs
 ;;;###autoload
 (def-setting! :devdocs (modes docset)
   "Map major MODES (one major-mode symbol or a list of them) to a devdocs
diff --git a/modules/feature/lookup/autoload/docsets.el b/modules/feature/lookup/autoload/docsets.el
index 2255e1662..20996146c 100644
--- a/modules/feature/lookup/autoload/docsets.el
+++ b/modules/feature/lookup/autoload/docsets.el
@@ -30,6 +30,7 @@ Used by `+lookup/in-docsets' and `+lookup/documentation'."
                                     docsets)))))
              (add-hook hook fn))))))
 
+;; FIXME obsolete :docset
 ;;;###autoload
 (def-setting! :docset (modes &rest docsets)
   "Registers a list of DOCSETS (strings) for MODES (either one major mode
diff --git a/modules/feature/lookup/autoload/lookup.el b/modules/feature/lookup/autoload/lookup.el
index da7216698..6cbcf3735 100644
--- a/modules/feature/lookup/autoload/lookup.el
+++ b/modules/feature/lookup/autoload/lookup.el
@@ -56,6 +56,7 @@ properties:
                            (add-hook 'xref-backend-functions xref-backend nil t))))))
              (add-hook hook fn))))))
 
+;; FIXME obsolete :lookup
 ;;;###autoload
 (def-setting! :lookup (modes &rest plist)
   :obsolete set-lookup-handlers!
diff --git a/modules/feature/snippets/autoload/settings.el b/modules/feature/snippets/autoload/settings.el
index b9769afa2..adb9f36da 100644
--- a/modules/feature/snippets/autoload/settings.el
+++ b/modules/feature/snippets/autoload/settings.el
@@ -9,6 +9,7 @@ can have its own snippets category, if the folder exists."
       (fset fn (lambda () (yas-activate-extra-mode mode)))
       (add-hook (intern (format "%s-hook" mode)) fn))))
 
+;; FIXME obsolete :yas-minor-mode
 ;;;###autoload
 (def-setting! :yas-minor-mode (mode)
   :obsolete set-yas-minor-mode!
diff --git a/modules/tools/ein/autoload.el b/modules/tools/ein/autoload.el
index 303deb947..6a65fcf19 100644
--- a/modules/tools/ein/autoload.el
+++ b/modules/tools/ein/autoload.el
@@ -1,5 +1,6 @@
 ;;; tools/ein/autoload.el -*- lexical-binding: t; -*-
 
+;; FIXME obsolete :ein-notebook-dir
 ;;;###autoload
 (def-setting! :ein-notebook-dir (dir)
   "Set the default directory from where to open Jupyter notebooks."
diff --git a/modules/tools/prodigy/autoload.el b/modules/tools/prodigy/autoload.el
index 6f27d40df..01d255136 100644
--- a/modules/tools/prodigy/autoload.el
+++ b/modules/tools/prodigy/autoload.el
@@ -1,5 +1,6 @@
 ;;; tools/prodigy/autoload.el -*- lexical-binding: t; -*-
 
+;; FIXME obsolete :service
 ;;;###autoload
 (def-setting! :service (&rest plist)
   "TODO"