diff --git a/basis/alien/marshall/syntax/syntax.factor b/basis/alien/marshall/syntax/syntax.factor
index b1fa8a922a..935aec87f9 100644
--- a/basis/alien/marshall/syntax/syntax.factor
+++ b/basis/alien/marshall/syntax/syntax.factor
@@ -27,3 +27,6 @@ IN: alien.marshall.syntax
 
 SYNTAX: C-MARSHALLED:
     function-types-effect define-c-marshalled ;
+
+SYNTAX: MARSHALLED:
+    function-types-effect marshalled-function define-declared ;