diff --git a/decode.rkt b/decode.rkt
index e8b2be9..822101b 100644
--- a/decode.rkt
+++ b/decode.rkt
@@ -221,7 +221,7 @@
   ;; todo: should this test be not block + not whitespace?
   (define not-block? (λ(i) (not (block-txexpr? i))))
   (filter-not empty?
-              (for/list ([i (len xc)])
+              (for/list ([i (in-range (len xc))])
                 (let ([item (get xc i)])
                   (cond
                     ;; skip first and last
diff --git a/highlight.rkt b/highlight.rkt
index 936d4b2..553240c 100644
--- a/highlight.rkt
+++ b/highlight.rkt
@@ -44,8 +44,8 @@ if zero is False:
   (match x
     [`(,tag ([,ks ,vs] ...) . ,els)
      `(,tag
-       ,(for/list ([k ks]
-                   [v vs])
+       ,(for/list ([k (in-value ks)]
+                   [v (in-value vs)])
           (list k (regexp-replace* "&" v "\\&")))
        ,@(map decode-ampersands-in-attributes els))]
     [v v]))
diff --git a/server-routes.rkt b/server-routes.rkt
index 5faa83a..c28e6c3 100644
--- a/server-routes.rkt
+++ b/server-routes.rkt
@@ -154,7 +154,7 @@
                                  (explode-path (find-relative-path (world:current-project-root) dashboard-dir))
                                  null)))
     (define dirlinks (cons "/" (map (λ(ps) (format "/~a/" (apply build-path ps)))  
-                                    (for/list ([i (length (cdr dirs))])
+                                    (for/list ([i (in-range (length (cdr dirs)))])
                                       (take (cdr dirs) (add1 i))))))
     `(tr (th ((colspan "3")) ,@(add-between (map (λ(dir dirlink) `(a ((href ,(format "~a~a" dirlink world:default-pagetree))) ,(->string dir))) dirs dirlinks) "/"))))