diff --git a/project-root.jam b/project-root.jam
index 8032be5935..f18f9b5f6c 100644
--- a/project-root.jam
+++ b/project-root.jam
@@ -3,4 +3,4 @@ path-constant BOOST_ROOT : . ;
 
 using lex ;
 using bison ;
-
+using testing ;