diff --git a/pkgs/applications/editors/emacs/elisp-packages/melpa-packages.nix b/pkgs/applications/editors/emacs/elisp-packages/melpa-packages.nix
index e48cc56a2c3e..fae91613fd19 100644
--- a/pkgs/applications/editors/emacs/elisp-packages/melpa-packages.nix
+++ b/pkgs/applications/editors/emacs/elisp-packages/melpa-packages.nix
@@ -773,7 +773,7 @@ let
           mozc = super.mozc.overrideAttrs (attrs: {
             postPatch = attrs.postPatch or "" + ''
               substituteInPlace src/unix/emacs/mozc.el \
-                --replace '"mozc_emacs_helper"' '"${pkgs.ibus-engines.mozc}/lib/mozc/mozc_emacs_helper"'
+                --replace '"mozc_emacs_helper"' '"${pkgs.mozc}/bin/mozc_emacs_helper"'
             '';
           });