diff --git a/new/type.jam b/new/type.jam
index ed261f27f..6a30712f8 100644
--- a/new/type.jam
+++ b/new/type.jam
@@ -62,6 +62,7 @@ rule register ( type : suffixes * : base-type ? : main ? )
         }
         
         feature.extend target-type : $(type) ;
+        feature.extend main-target-type : $(type) ;
         
         feature.compose <target-type>$(type) : $(base-type:G=<base-target-type>) ; 
         feature.extend base-target-type : $(type) ;
diff --git a/v2/build/type.jam b/v2/build/type.jam
index ed261f27f..6a30712f8 100644
--- a/v2/build/type.jam
+++ b/v2/build/type.jam
@@ -62,6 +62,7 @@ rule register ( type : suffixes * : base-type ? : main ? )
         }
         
         feature.extend target-type : $(type) ;
+        feature.extend main-target-type : $(type) ;
         
         feature.compose <target-type>$(type) : $(base-type:G=<base-target-type>) ; 
         feature.extend base-target-type : $(type) ;