diff --git a/pkgs/development/libraries/qt-4.x/4.8/default.nix b/pkgs/development/libraries/qt-4.x/4.8/default.nix
index 66a58dba32e2..a54860ff0ac8 100644
--- a/pkgs/development/libraries/qt-4.x/4.8/default.nix
+++ b/pkgs/development/libraries/qt-4.x/4.8/default.nix
@@ -126,6 +126,11 @@ stdenv.mkDerivation rec {
     sed -i 's/QMAKE_CXX = g++/QMAKE_CXX = clang++/' mkspecs/common/g++-base.conf
   '';
 
+  postConfigure = ''
+    echo "applying patch ${./parallel-build.patch}"
+    patch -p1 < ${./parallel-build.patch}
+  '';
+
   prefixKey = "-prefix ";
 
   configureFlags =
diff --git a/pkgs/development/libraries/qt-4.x/4.8/parallel-build.patch b/pkgs/development/libraries/qt-4.x/4.8/parallel-build.patch
new file mode 100644
index 000000000000..5783543e8449
--- /dev/null
+++ b/pkgs/development/libraries/qt-4.x/4.8/parallel-build.patch
@@ -0,0 +1,6 @@
+--- a/tools/designer/src/lib/Makefile
++++ b/tools/designer/src/lib/Makefile
+@@ -7167,2 +7167,3 @@ compiler_moc_header_clean:
+                .uic/release-shared/ui_qtgradientviewdialog.h \
++               .uic/release-shared/ui_qtgradientview.h \
+                ../../../shared/qtgradienteditor/qtgradientviewdialog.h