diff --git a/pkgs/tools/networking/mu/default.nix b/pkgs/tools/networking/mu/default.nix
index a0f14b2fc694..891a42ae1cdc 100644
--- a/pkgs/tools/networking/mu/default.nix
+++ b/pkgs/tools/networking/mu/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
   '';
 
   # AOT native-comp, mostly copied from pkgs/build-support/emacs/generic.nix
-  postInstall = lib.optionalString (emacs.nativeComp or false) ''
+  postInstall = lib.optionalString (emacs.withNativeCompilation or false) ''
     mkdir -p $out/share/emacs/native-lisp
     export EMACSLOADPATH=$out/share/emacs/site-lisp/mu4e:
     export EMACSNATIVELOADPATH=$out/share/emacs/native-lisp: