diff --git a/res/xml-sw600dp/lab_preferences.xml b/res/xml-sw600dp/lab_preferences.xml
index 1dbec88..512c8c1 100644
--- a/res/xml-sw600dp/lab_preferences.xml
+++ b/res/xml-sw600dp/lab_preferences.xml
@@ -16,17 +16,19 @@
 
 <PreferenceScreen
         xmlns:android="http://schemas.android.com/apk/res/android" >
-
     <CheckBoxPreference
         android:key="enable_quick_controls"
         android:defaultValue="false"
         android:title="@string/pref_lab_quick_controls"
         android:summary="@string/pref_lab_quick_controls_summary" />
-
     <CheckBoxPreference
         android:key="use_instant_search"
         android:defaultValue="false"
         android:title="@string/pref_use_instant_search"
         android:summary="@string/pref_use_instant_search_summary" />
-
+    <CheckBoxPreference
+        android:key="inverted"
+        android:defaultValue="false"
+        android:title="@string/pref_lab_inverted"
+        android:summary="@string/pref_lab_inverted_summary" />
 </PreferenceScreen>