diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 01a8da323..51176fb87 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -187,6 +187,7 @@
         <activity
             android:label="@string/app_name"
             android:name="com.android.email2.ui.MailActivityEmail"
+            android:theme="@style/PlainUnifiedEmailTheme"
             android:uiOptions="splitActionBarWhenNarrow">
             <intent-filter>
                 <action android:name="android.intent.action.VIEW" />