diff --git a/pkgs/tools/networking/mu/default.nix b/pkgs/tools/networking/mu/default.nix
index 774e5c62b779..a0f14b2fc694 100644
--- a/pkgs/tools/networking/mu/default.nix
+++ b/pkgs/tools/networking/mu/default.nix
@@ -40,6 +40,8 @@ stdenv.mkDerivation rec {
     find $out/share/emacs -type f -name '*.el' -print0 \
       | xargs -0 -I {} -n 1 -P $NIX_BUILD_CORES sh -c \
           "emacs --batch --eval '(setq large-file-warning-threshold nil)' -f batch-native-compile {} || true"
+  '' + ''
+    emacs --batch -l package --eval "(package-generate-autoloads \"mu4e\" \"$out/share/emacs/site-lisp/mu4e\")"
   '';
 
   buildInputs = [ emacs glib gmime3 texinfo xapian ];