diff -up wine-mozilla-2.21/wine/mozconfig-common.orig wine-mozilla-2.21/wine/mozconfig-common
--- wine-mozilla-2.21/wine/mozconfig-common.orig	2013-05-30 08:18:57.043549666 +0200
+++ wine-mozilla-2.21/wine/mozconfig-common	2013-05-30 08:19:40.752128636 +0200
@@ -10,9 +10,8 @@ ac_add_options --disable-necko-wifi
 ac_add_options --disable-crashreporter
 ac_add_options --disable-webgl
 ac_add_options --disable-webrtc
+ac_add_options --enable-win32-target=WINNT
 
-export CFLAGS="$CFLAGS -DWINE_GECKO_SRC"
-export CXXFLAGS="$CXXFLAGS -DWINE_GECKO_SRC"
 export HOST_LDFLAGS=" "
 export HOST_CFLAGS=" "
 export HOST_CXXFLAGS=" "