diff --git a/build.cmd b/build.cmd
index 62513a5..71b9c1a 100644
--- a/build.cmd
+++ b/build.cmd
@@ -4,9 +4,9 @@ bcp ^
     boost/container/static_vector.hpp ^
     boost/crc.hpp ^
     boost/icl/interval_map.hpp ^
+    boost/optional.hpp ^
     boost/range/algorithm/ ^
     boost/range/algorithm_ext/ ^
     boost/smart_ptr/intrusive_ptr.hpp ^
-    boost/optional.hpp ^
     boost/variant/ ^
-    --boost="%BOOST_PATH%" .
+    --boost="%1" .