diff --git a/mozilla/tools/tinderbox-configs/xulrunner/win32/mozconfig b/mozilla/tools/tinderbox-configs/xulrunner/win32/mozconfig
index 8364a44c35b..decd79f6d9e 100755
--- a/mozilla/tools/tinderbox-configs/xulrunner/win32/mozconfig
+++ b/mozilla/tools/tinderbox-configs/xulrunner/win32/mozconfig
@@ -7,7 +7,7 @@ export MOZILLA_OFFICIAL
 
 mk_add_options MOZILLA_OFFICIAL=1
 mk_add_options MOZ_CO_PROJECT=xulrunner
-mk_add_options MOZ_MAKE_FLAGS="-j8"
+mk_add_options MOZ_MAKE_FLAGS="-j2"
 
 ac_add_options --enable-application=xulrunner
 ac_add_options --disable-tests