diff --git a/app/src/main/res/values/prefs_general.xml b/app/src/main/res/values/prefs_general.xml
index b686bad..d74fde9 100644
--- a/app/src/main/res/values/prefs_general.xml
+++ b/app/src/main/res/values/prefs_general.xml
@@ -2,4 +2,14 @@
 <resources>
     <string name="title_category_general">General</string>
     <string name="title_system_date_time_settings">System date \u0026 time settings</string>
+
+    <string name="key_theme">key_theme</string>
+    <string name="title_theme">Theme</string>
+
+    <string name="theme_light">Light</string>
+    <string name="theme_dark">Dark</string>
+    <string-array name="array_theme">
+        <item>@string/theme_light</item>
+        <item>@string/theme_dark</item>
+    </string-array>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/xml/preferences.xml b/app/src/main/res/xml/preferences.xml
index 6cccf2b..9df8703 100644
--- a/app/src/main/res/xml/preferences.xml
+++ b/app/src/main/res/xml/preferences.xml
@@ -12,6 +12,15 @@
             android:summary="%s"/>
     </PreferenceCategory>-->
     <PreferenceCategory android:title="@string/title_category_general">
+        <ListPreference
+            android:key="@string/key_theme"
+            android:title="@string/title_theme"
+            android:dialogTitle="@string/title_theme"
+            android:entries="@array/array_theme"
+            android:entryValues="@array/array_theme"
+            android:defaultValue="@string/theme_light"
+            android:summary="%s">
+        </ListPreference>
         <Preference android:title="@string/title_system_date_time_settings">
             <!-- https://developer.android.com/reference/android/provider/Settings.html -->
             <intent android:action="android.settings.DATE_SETTINGS"/>