diff --git a/res/values/themes.xml b/res/values/themes.xml
index bd02c6ed2..16063b2a6 100644
--- a/res/values/themes.xml
+++ b/res/values/themes.xml
@@ -193,6 +193,7 @@
 
     <style name="TextSecure.DarkTheme" parent="@style/Theme.AppCompat">
         <item name="theme_type">dark</item>
+        <item name="android:navigationBarColor" tools:targetApi="21">@color/black</item>
         <item name="actionBarStyle">@style/TextSecure.DarkActionBar</item>
         <item name="actionBarTabBarStyle">@style/TextSecure.DarkActionBar.TabBar</item>
         <item name="actionBarPopupTheme">@style/ThemeOverlay.AppCompat.Dark</item>