diff --git a/src/formulare/core.clj b/src/formulare/core.clj
index d6d94c9..d67ba53 100644
--- a/src/formulare/core.clj
+++ b/src/formulare/core.clj
@@ -5,9 +5,6 @@
             [hiccup.core :as hcore]
             [ring.util.anti-forgery :refer [anti-forgery-field]]))
 
-(defn in? [coll x]
-  (some? (some (partial = x) coll)))
-
 (spec/def ::label string?)
 (spec/def ::required boolean?)
 (spec/def ::spec
@@ -18,8 +15,7 @@
            :options (spec/coll-of (spec/tuple string? string?))))
 (spec/def ::widget
   #{:input :select :checkbox :textarea :mselect :hidden})
-(spec/def ::from-req
-  (spec/and ifn? #_(= 1 (->> % meta :arglists (map count) first))))
+(spec/def ::from-req ifn?)
 (spec/def ::to-form ::from-req)
 (spec/def ::field
   (spec/keys :opt-un [::label
diff --git a/test/formulare/theme_test.clj b/test/formulare/theme_test.clj
index d4a1e27..3dc8117 100644
--- a/test/formulare/theme_test.clj
+++ b/test/formulare/theme_test.clj
@@ -51,14 +51,6 @@
                (nth 2)
                (nth 2))))))
 
-(deftest checkbox-is-overridable
-  (binding [*checkbox-widget-theme* (fn [& _] \a)]
-    (is (= \a
-           (-> (render-widgets {:fields {:foo {:widget :checkbox}}}
-                               {} {})
-               (nth 2)
-               (nth 2))))))
-
 (deftest textarea-is-overridable
   (binding [*textarea-widget-theme* (fn [& _] \a)]
     (is (= \a