diff --git a/src/clojure/neko/ui.clj b/src/clojure/neko/ui.clj
index d98d9c9..f541cca 100644
--- a/src/clojure/neko/ui.clj
+++ b/src/clojure/neko/ui.clj
@@ -3,7 +3,8 @@
   (:require [neko.ui.mapping :as kw]
             [neko.ui.traits :refer [apply-trait]]
             [neko.-utils :refer [keyword->setter reflect-setter
-                                 reflect-constructor]])
+                                 reflect-constructor
+                                 closest-android-ancestor]])
   (:import android.content.res.Configuration
            neko.App))
 
@@ -95,7 +96,8 @@
   "Takes a widget and key-value pairs of attributes, and applies these
   attributes to the widget."
   [widget & {:as attributes}]
-  (apply-attributes (kw/keyword-by-classname (type widget))
+  (apply-attributes (kw/keyword-by-classname (closest-android-ancestor
+                                               (class widget)))
                     widget attributes {}))
 
 ;; ## Compatibility with Android XML UI facilities.
diff --git a/test/neko/t_ui.clj b/test/neko/t_ui.clj
index 001d220..f3bb702 100644
--- a/test/neko/t_ui.clj
+++ b/test/neko/t_ui.clj
@@ -6,6 +6,7 @@
   (:import [android.widget Button LinearLayout TextView]
            android.content.pm.ActivityInfo
            android.view.View
+           android.widget.LinearLayout
            neko.App
            [org.robolectric Robolectric RuntimeEnvironment]))
 
@@ -72,12 +73,20 @@
       (is (= "hello" (.getText b))))))
 
 (deftest config
-  (let [v (ui/make-ui RuntimeEnvironment/application [:button {:text "hello"}])]
+  (let [v (ui/make-ui RuntimeEnvironment/application [:button {:text "hello"}])
+        ll (ui/make-ui RuntimeEnvironment/application
+                       [:linear-layout {:custom-constructor
+                                        (fn [ctx]
+                                          (proxy [LinearLayout] [ctx]))
+                                        :orientation :vertical}])]
     (is (= View/VISIBLE (.getVisibility v)))
     (is (= "hello" (.getText v)))
     (ui/config v :text "updated" :visibility View/GONE)
     (is (= "updated" (.getText v)))
-    (is (= View/GONE (.getVisibility v)))))
+    (is (= View/GONE (.getVisibility v)))
+    (is (= LinearLayout/VERTICAL(.getOrientation ll)))
+    (ui/config ll :orientation :horizontal)
+    (is (= LinearLayout/HORIZONTAL (.getOrientation ll)))))
 
 (deftest inflate-layout
   (is (instance? TextView (ui/inflate-layout RuntimeEnvironment/application