diff --git a/pkgs/tools/inputmethods/fcitx5/fcitx5-qt.nix b/pkgs/tools/inputmethods/fcitx5/fcitx5-qt.nix
index 24019041eb19..8adc271ff8ff 100644
--- a/pkgs/tools/inputmethods/fcitx5/fcitx5-qt.nix
+++ b/pkgs/tools/inputmethods/fcitx5/fcitx5-qt.nix
@@ -48,6 +48,8 @@ mkDerivation rec {
     libXdmcp
   ];
 
+  qtWrapperArgs = [ "--prefix" "FCITX_ADDON_DIRS" ":" "${placeholder "out"}/lib/fcitx5" ];
+
   meta = with lib; {
     description = "Fcitx5 Qt Library";
     homepage = "https://github.com/fcitx/fcitx5-qt";