diff --git a/build.jam b/build.jam
index 22db5a47..1cdd034c 100644
--- a/build.jam
+++ b/build.jam
@@ -5,22 +5,25 @@
 
 require-b2 5.2 ;
 
+constant boost_dependencies :
+    /boost/assert//boost_assert
+    /boost/config//boost_config
+    /boost/container_hash//boost_container_hash
+    /boost/core//boost_core
+    /boost/mp11//boost_mp11
+    /boost/predef//boost_predef
+    /boost/throw_exception//boost_throw_exception ;
+
 project /boost/unordered
     : common-requirements
-        <library>/boost/assert//boost_assert
-        <library>/boost/config//boost_config
-        <library>/boost/container_hash//boost_container_hash
-        <library>/boost/core//boost_core
-        <library>/boost/mp11//boost_mp11
-        <library>/boost/predef//boost_predef
-        <library>/boost/throw_exception//boost_throw_exception
         <include>include
     ;
 
 explicit
-    [ alias boost_unordered ]
+    [ alias boost_unordered : : : : <library>$(boost_dependencies) ]
     [ alias all : boost_unordered test ]
     ;
 
 call-if : boost-library unordered
     ;
+