diff --git a/preprocessed/preprocess.cmd b/preprocessed/preprocess.cmd
index d1042c3..7fb92f3 100644
--- a/preprocessed/preprocess.cmd
+++ b/preprocessed/preprocess.cmd
@@ -1 +1 @@
-gcc -E -C -P "-I%(boost_root)s" "-D BOOST_USER_CONFIG=<%(boost_root)s/libs/mpl/preprocessed/include/%(mode)s/user.hpp>" -D BOOST_MPL_CFG_NO_OWN_PP_PRIMITIVES %(file)s >"%(file_path)s"
+gcc -E -C -P "-I%(boost_root)s" "-D BOOST_USER_CONFIG=\"%(boost_root)s/libs/mpl/preprocessed/include/%(mode)s/user.hpp\"" -D BOOST_MPL_CFG_NO_OWN_PP_PRIMITIVES %(file)s >"%(file_path)s"