diff --git a/networks.rkt b/networks.rkt
index 6b34c5f..9e4c414 100644
--- a/networks.rkt
+++ b/networks.rkt
@@ -60,12 +60,12 @@
 
 ;;; Given a state s updates all the variables from xs.  This
 ;;; corresponds to a parallel mode.
-(define (update bn  ; the Boolean network
+(define (update n   ; the network
                 s   ; the state to operate on
                 xs) ; the variables to update
   (let ([new-s (hash-copy s)])
     (for ([x xs])
-      (let ([f (hash-ref bn x)])
+      (let ([f (hash-ref n x)])
         (hash-set! new-s x (f s))))
     new-s))