diff --git a/mailbox-android/src/main/java/org/briarproject/mailbox/android/dontkillme/DoNotKillMeUtils.java b/mailbox-android/src/main/java/org/briarproject/mailbox/android/dontkillme/DoNotKillMeUtils.java
index 8fd695f9aaa0cd47af800d95d57774cccbe7d3e9..2bc272f173af5ccec938d303fb95de691432a44e 100644
--- a/mailbox-android/src/main/java/org/briarproject/mailbox/android/dontkillme/DoNotKillMeUtils.java
+++ b/mailbox-android/src/main/java/org/briarproject/mailbox/android/dontkillme/DoNotKillMeUtils.java
@@ -2,15 +2,14 @@ package org.briarproject.mailbox.android.dontkillme;
 
 import android.content.Context;
 
-import org.briarproject.mailbox.R;
+import com.google.android.material.dialog.MaterialAlertDialogBuilder;
 
-import androidx.appcompat.app.AlertDialog;
+import org.briarproject.mailbox.R;
 
 public class DoNotKillMeUtils {
 
 	static void showOnboardingDialog(Context ctx, String text) {
-		new AlertDialog.Builder(ctx,
-				R.style.OnboardingDialogTheme)
+		new MaterialAlertDialogBuilder(ctx)
 				.setMessage(text)
 				.setNeutralButton(R.string.dnkm_got_it,
 						(dialog, which) -> dialog.cancel())
diff --git a/mailbox-android/src/main/res/values/styles.xml b/mailbox-android/src/main/res/values/styles.xml
index 8794b78ba41708b9bd0386411fce023c0c960da0..679e8d58cb2f759afbdbd7ca60160a5a7a24ec3a 100644
--- a/mailbox-android/src/main/res/values/styles.xml
+++ b/mailbox-android/src/main/res/values/styles.xml
@@ -5,8 +5,6 @@
         <item name="android:textColor">?attr/colorSecondary</item>
     </style>
 
-    <style name="OnboardingDialogTheme" parent="Theme.AppCompat.DayNight.Dialog.MinWidth" />
-
     <style name="PowerIcon">
         <item name="android:background">@drawable/ic_circle</item>
         <!-- Figma had #222E3C as backgroundTint, but the style guide's closest is this -->