diff --git a/pkgs/applications/misc/rescuetime/default.nix b/pkgs/applications/misc/rescuetime/default.nix
index b74d2716f98..974c593d37c 100644
--- a/pkgs/applications/misc/rescuetime/default.nix
+++ b/pkgs/applications/misc/rescuetime/default.nix
@@ -24,7 +24,11 @@ stdenv.mkDerivation {
     dpkg-deb -x $src pkg
     sourceRoot=pkg
   '';
-  installPhase = ''
+  installPhase = let
+
+    lib = p: stdenv.lib.makeLibraryPath [ p ];
+
+  in ''
     mkdir -p $out/bin
     cp usr/bin/rescuetime $out/bin
 
@@ -33,7 +37,7 @@ stdenv.mkDerivation {
       $out/bin/rescuetime
 
     wrapProgram $out/bin/rescuetime \
-      --prefix LD_PRELOAD : ${qt4}/lib/libQtGui.so.4:${qt4}/lib/libQtCore.so.4:${libXtst}/lib/libXtst.so.6:${libXext}/lib/libXext.so.6:${libX11}/lib/libX11.so.6:${libXScrnSaver}/lib/libXss.so.1
+      --prefix LD_PRELOAD : ${lib qt4}/libQtGui.so.4:${lib qt4}/libQtCore.so.4:${lib libXtst}/libXtst.so.6:${lib libXext}/libXext.so.6:${lib libX11}/libX11.so.6:${lib libXScrnSaver}/libXss.so.1
   '';
   meta = with lib; {
     description = "Helps you understand your daily habits so you can focus and be more productive";