diff --git a/pollen/decode.rkt b/pollen/decode.rkt
index 0c874bc..7ff9742 100644
--- a/pollen/decode.rkt
+++ b/pollen/decode.rkt
@@ -3,6 +3,8 @@
 (require "world.rkt"
          "private/whitespace.rkt")
 
+(require "unstable/mb.rkt")
+(provide (all-from-out "unstable/mb.rkt"))
 
 (define (->list/tx x)
   ;; same as ->list but catches special case of single txexpr,