diff --git a/collects/mzlib/unit200.rkt b/collects/mzlib/unit200.rkt
index 1106c77..9247f12 100644
--- a/collects/mzlib/unit200.rkt
+++ b/collects/mzlib/unit200.rkt
@@ -6,7 +6,7 @@
 		      syntax/stx
 		      syntax/name
 		      syntax/context
-                      unstable/syntax
+                      racket/syntax
 		      "list.rkt"
 		      "private/unitidmap.rkt")