diff --git a/janet/validate.janet b/janet/validate.janet
index 1b06fe2..8f9649b 100644
--- a/janet/validate.janet
+++ b/janet/validate.janet
@@ -345,6 +345,7 @@ Deferred until a later iteration of Ludus:
  (def the-fn (resolve-name ctx (fn-word :data)))
  (when (not the-fn) (break validator))
  (when (= :function (type the-fn)) (break validator))
+ (when (= :cfunction (type the-fn)) (break validator))
  (print "fn name: " (the-fn :name))
  (def arities (the-fn :arities))
  (print "arities: ")
@@ -625,7 +626,7 @@ Deferred until a later iteration of Ludus:
  (default ctx @{})
  (def validator (new-validator ast))
  (def base-ctx @{:^parent ctx})
- (set (validator :ctx) ctx)
+ (set (validator :ctx) base-ctx)
  (validate validator))
 
 (defn foo [] :foo)