diff --git a/pkgs/tools/misc/rockbox-utility/default.nix b/pkgs/tools/misc/rockbox-utility/default.nix
index f84b9563967..32f5a551dfe 100644
--- a/pkgs/tools/misc/rockbox-utility/default.nix
+++ b/pkgs/tools/misc/rockbox-utility/default.nix
@@ -2,6 +2,8 @@
 , qtbase, qttools, makeWrapper, qmake
 , withEspeak ? false, espeak ? null }:
 
+let inherit (stdenv.lib) getDev; in
+
 stdenv.mkDerivation  rec {
   name = "rockbox-utility-${version}";
   version = "1.4.0";
@@ -15,6 +17,11 @@ stdenv.mkDerivation  rec {
     ++ stdenv.lib.optional withEspeak espeak;
   nativeBuildInputs = [ makeWrapper pkgconfig qmake ];
 
+  postPatch = ''
+    sed -i rbutil/rbutilqt/rbutilqt.pro \
+        -e '/^lrelease.commands =/ s|$$\[QT_INSTALL_BINS\]/lrelease -silent|${getDev qttools}/bin/lrelease|'
+  '';
+
   preConfigure = ''
     cd rbutil/rbutilqt
   '';