diff --git a/.package-lists/guix-emacs-manifest.scm b/.package-lists/guix-emacs-manifest.scm
index ce791d43..4055bad1 100644
--- a/.package-lists/guix-emacs-manifest.scm
+++ b/.package-lists/guix-emacs-manifest.scm
@@ -1,3 +1,4 @@
+;; TODO: Disable unused modes, see if it makes startup faster.
 (specifications->manifest
   '("clhs"
     "emacs"
@@ -76,7 +77,6 @@
     "emacs-markdown-mode"
     ;; "emacs-md4rd" ; TODO: Re-enable once fixed.
     "emacs-meson-mode"
-    "emacs-mu4e-conversation"
     "emacs-nov-el"
     "emacs-nix-mode"
     "emacs-org"