diff --git a/pkgs/development/libraries/qt-mobility/default.nix b/pkgs/development/libraries/qt-mobility/default.nix
index 2c299305410..71ec5e77a73 100644
--- a/pkgs/development/libraries/qt-mobility/default.nix
+++ b/pkgs/development/libraries/qt-mobility/default.nix
@@ -17,12 +17,16 @@ stdenv.mkDerivation rec {
   '';
 
   # we need to prevent the 'make install' to want to write to ${qt4}!
+  # according to thiago#qt@freenode these are used for the QML engine
   preBuild = ''
     for i in connectivity contacts feedback gallery location multimedia organizer publishsubscribe sensors serviceframework systeminfo; do
       substituteInPlace plugins/declarative/$i/Makefile --replace "${qt4}/lib/qt4/imports/" "$out/lib/qt4/imports/"
-    done
   '';
 
+  # Features files (*.prf) are not installed on nixos
+  # https://bugreports.qt-project.org/browse/QTMOBILITY-1085
+  #  - features/mobility.prf (/tmp/nix-build-9kh12nhf9cyplfwiws96gz414v6wgl67-qt-mobility-1.2.0.drv-0/qt-mobility-opensource-src-1.2.0)
+
   patchPhase = ''
     # required to make the configure script work
     substituteInPlace configure --replace "/bin/pwd" "${coreutils}/bin/pwd"
@@ -34,7 +38,7 @@ stdenv.mkDerivation rec {
     substituteInPlace bin/pathhelper --replace "/usr/bin/perl" "${perl}/bin/perl"
   '';
 
-  buildInputs = [ qt4 libX11 bluez perl];
+  buildInputs = [ qt4 libX11 bluez perl ];
 
   meta = {
     description = "Qt Mobility";