diff --git a/wscript b/wscript
index 8acf8e10..d202fde4 100644
--- a/wscript
+++ b/wscript
@@ -21,7 +21,7 @@ def build(bld):
 
     bld.env['DEFINES_BOOST_SHARED'] = \
         ['BOOST_ALL_NO_LIB=1', 'BOOST_DETAIL_NO_CONTAINER_FWD',
-         'BOOST_SYSTEM_NO_DEPRECATED', 'BOOST_NO_AUTO_PTR']
+         'BOOST_SYSTEM_NO_DEPRECATED','BOOST_NO_AUTO_PTR=']
 
     include_dirs = ['.']