diff --git a/samples/Support7Demos/res/layout/toolbar_usage.xml b/samples/Support7Demos/res/layout/toolbar_usage.xml
index b202e1f68..76944be10 100644
--- a/samples/Support7Demos/res/layout/toolbar_usage.xml
+++ b/samples/Support7Demos/res/layout/toolbar_usage.xml
@@ -27,7 +27,7 @@
             android:layout_width="match_parent"
             android:minHeight="?attr/actionBarSize"
             android:background="?attr/colorPrimaryDark"
-            app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
+            android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
             app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />
 
     <TextView