diff --git a/core/continuations/continuations.factor b/core/continuations/continuations.factor
index 249cc4c161..0d0c41c72d 100644
--- a/core/continuations/continuations.factor
+++ b/core/continuations/continuations.factor
@@ -1,7 +1,7 @@
 ! Copyright (C) 2003, 2011 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: accessors arrays assocs combinators combinators.private
-kernel kernel.private make namespaces sequences vectors ;
+USING: accessors assocs combinators combinators.private kernel
+kernel.private make namespaces sequences vectors ;
 IN: continuations
 
 : with-datastack ( stack quot -- new-stack )
@@ -35,12 +35,7 @@ SYMBOL: restarts
 
 PRIVATE>
 
-TUPLE: continuation
-{ data array }
-{ call callstack }
-{ retain array }
-{ name vector }
-{ catch vector } ;
+TUPLE: continuation data call retain name catch ;
 
 C: <continuation> continuation