diff --git a/v2/build/virtual-target.jam b/v2/build/virtual-target.jam
index 8516974d7..ee25c5d8e 100644
--- a/v2/build/virtual-target.jam
+++ b/v2/build/virtual-target.jam
@@ -813,7 +813,7 @@ rule from-file ( file : file-loc : project )
 rule register ( target )
 {
     local signature = [ sequence.join
-       [ $(target).name ] : - ] ;    
+       [ $(target).path ] [ $(target).name ] : - ] ;    
 
             
     local result ;