diff --git a/res/values-v21/styles.xml b/res/values-v21/styles.xml
index aef5d1c..4f54dd8 100644
--- a/res/values-v21/styles.xml
+++ b/res/values-v21/styles.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!--
     Copyright (C) 2015 The Android Open Source Project
+    Copyright (C) 2024 The LineageOS Project
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
@@ -20,9 +21,10 @@
         <item name="android:colorEdgeEffect">@color/conversation_edge_effect</item>
     </style>
 
-    <style name="BugleTheme.DialogActivity" parent="@style/Theme.AppCompat.Light.Dialog">
+    <style name="BugleTheme.DialogActivity" parent="@style/Theme.AppCompat.DayNight.Dialog">
         <item name="android:windowNoTitle">false</item>
-        <item name="android:background">@android:color/white</item>
+        <item name="android:background">@color/window_background</item>
+        <item name="android:dialogCornerRadius">28dp</item>
     </style>
 
     <style name="ContactListItemDrawableIndicator">
diff --git a/res/values/styles.xml b/res/values/styles.xml
index c690871..e5c7a51 100644
--- a/res/values/styles.xml
+++ b/res/values/styles.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!--
     Copyright (C) 2015 The Android Open Source Project
+    Copyright (C) 2024 The LineageOS Project
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
@@ -38,6 +39,7 @@
          <item name="android:textColorHighlight">@color/text_highlight_color</item>
          <item name="actionBarStyle">@style/BugleActionBar</item>
          <item name="apnPreferenceStyle">@style/ApnPreference</item>
+         <item name="alertDialogTheme">@style/AlertDialogTheme</item>
     </style>
 
     <style name="LaunchTheme" parent="Theme.AppCompat.DayNight.DarkActionBar">
@@ -646,4 +648,9 @@
         <item name="android:textSize">@dimen/directory_header_text_size</item>
         <item name="android:textStyle">bold</item>
     </style>
+
+    <style name="AlertDialogTheme" parent="@style/ThemeOverlay.AppCompat.Dialog.Alert">
+        <item name="android:background">@color/window_background</item>
+        <item name="dialogCornerRadius">28dp</item>
+    </style>
 </resources>