diff --git a/lib/ui/theme/dynamic_theme_builder.dart b/lib/ui/theme/dynamic_theme_builder.dart
index c6255a1f..d57cf153 100644
--- a/lib/ui/theme/dynamic_theme_builder.dart
+++ b/lib/ui/theme/dynamic_theme_builder.dart
@@ -76,7 +76,7 @@ class DynamicThemeBuilder extends StatelessWidget {
               2: lightDynamicTheme,
               3: darkDynamicTheme,
             },
-            fallbackTheme: darkCustomTheme,
+            fallbackTheme: lightCustomTheme,
           ),
           builder: (context, theme) => MaterialApp(
             debugShowCheckedModeBanner: false,
diff --git a/lib/ui/views/navigation/navigation_view.dart b/lib/ui/views/navigation/navigation_view.dart
index ccf12616..74fdf21b 100644
--- a/lib/ui/views/navigation/navigation_view.dart
+++ b/lib/ui/views/navigation/navigation_view.dart
@@ -11,6 +11,7 @@ class NavigationView extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return ViewModelBuilder<NavigationViewModel>.reactive(
+      onModelReady: (model) => model.initialize(context),
       viewModelBuilder: () => locator<NavigationViewModel>(),
       builder: (context, model, child) => Scaffold(
         body: PageTransitionSwitcher(
diff --git a/lib/ui/views/navigation/navigation_viewmodel.dart b/lib/ui/views/navigation/navigation_viewmodel.dart
index 85974626..684354cd 100644
--- a/lib/ui/views/navigation/navigation_viewmodel.dart
+++ b/lib/ui/views/navigation/navigation_viewmodel.dart
@@ -1,12 +1,28 @@
+// ignore_for_file: use_build_context_synchronously
+import 'package:dynamic_themes/dynamic_themes.dart';
 import 'package:flutter/material.dart';
 import 'package:injectable/injectable.dart';
 import 'package:revanced_manager/ui/views/home/home_view.dart';
 import 'package:revanced_manager/ui/views/patcher/patcher_view.dart';
 import 'package:revanced_manager/ui/views/settings/settings_view.dart';
+import 'package:shared_preferences/shared_preferences.dart';
 import 'package:stacked/stacked.dart';
 
 @lazySingleton
 class NavigationViewModel extends IndexTrackingViewModel {
+  void initialize(BuildContext context) async {
+    SharedPreferences prefs = await SharedPreferences.getInstance();
+    if (prefs.getBool('useDarkTheme') == null) {
+      if (MediaQuery.of(context).platformBrightness == Brightness.light) {
+        await prefs.setBool('useDarkTheme', false);
+        DynamicTheme.of(context)!.setTheme(0);
+      } else {
+        await prefs.setBool('useDarkTheme', true);
+        DynamicTheme.of(context)!.setTheme(1);
+      }
+    }
+  }
+
   Widget getViewForIndex(int index) {
     switch (index) {
       case 0: