diff --git a/mkspecs/macx-clang/qmake.conf b/mkspecs/macx-clang/qmake.conf
index 170464d08f..14c885fd78 100644
--- a/mkspecs/macx-clang/qmake.conf
+++ b/mkspecs/macx-clang/qmake.conf
@@ -11,13 +11,16 @@ QMAKE_APPLE_DEVICE_ARCHS = x86_64
 # configure \
 #   -pkg-config \
 #   -fontconfig -system-freetype \
-#   -system-xcb -xkb -no-opengl \
-#   -qt-xkbcommon -qt-xkbcommon-x11
+#   -system-xcb -no-opengl
 #
 # Ensure that pkg-config is properly configured, or that
 #   PKG_CONFIG_PATH=/opt/X11/lib/pkgconfig:/opt/X11/share/pkgconfig
 # is set in your build environment.
 #
+# If you don't want to use pkg-config, you can add:
+#   -L/opt/X11/lib -I/opt/X11/include
+# to the configure options.
+#
 # Due to irreconcilable differences between Cocoa
 # and X11, OpenGL is currently not supported.