diff --git a/build.jam b/build.jam
index d6d97ec..1d016b5 100644
--- a/build.jam
+++ b/build.jam
@@ -7,10 +7,10 @@ import project ;
 
 project /boost/container_hash
     : common-requirements
-        <source>/boost/config//boost_config
-        <source>/boost/describe//boost_describe
-        <source>/boost/mp11//boost_mp11
-        <source>/boost/type_traits//boost_type_traits
+        <library>/boost/config//boost_config
+        <library>/boost/describe//boost_describe
+        <library>/boost/mp11//boost_mp11
+        <library>/boost/type_traits//boost_type_traits
         <include>include
     ;