diff --git a/src/tools/types/asm.jam b/src/tools/types/asm.jam
index d728ecc96..a340db36a 100644
--- a/src/tools/types/asm.jam
+++ b/src/tools/types/asm.jam
@@ -1,4 +1,4 @@
 # Copyright Craig Rodrigues 2005. Distributed under the Boost
 # Software License, Version 1.0. (See accompanying
 # file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-type ASM : s S ;
+type ASM : s S asm ;