diff --git a/mobile/src/main/java/be/mygod/vpnhotspot/App.kt b/mobile/src/main/java/be/mygod/vpnhotspot/App.kt
index bb583f32..c396e08b 100644
--- a/mobile/src/main/java/be/mygod/vpnhotspot/App.kt
+++ b/mobile/src/main/java/be/mygod/vpnhotspot/App.kt
@@ -28,7 +28,7 @@ class App : Application() {
 
     val handler = Handler()
     val pref: SharedPreferences by lazy { PreferenceManager.getDefaultSharedPreferences(this) }
-    val dns: String get() = app.pref.getString("service.dns", "8.8.8.8:53")
+    val dns: String get() = app.pref.getString("service.dns", "8.8.8.8")
 
     fun toast(@StringRes resId: Int) = handler.post { Toast.makeText(app, resId, Toast.LENGTH_SHORT).show() }
 }
diff --git a/mobile/src/main/res/values-zh-rCN/strings.xml b/mobile/src/main/res/values-zh-rCN/strings.xml
index 8856860e..76332d99 100644
--- a/mobile/src/main/res/values-zh-rCN/strings.xml
+++ b/mobile/src/main/res/values-zh-rCN/strings.xml
@@ -41,7 +41,7 @@
     <string name="connected_state_failed">已从 %s 断开</string>
 
     <string name="settings_service">服务</string>
-    <string name="settings_service_dns">下游 DNS 服务器:端口</string>
+    <string name="settings_service_dns">下游 DNS 服务器[:端口]</string>
     <string name="settings_service_clean">清理/重新应用路由规则</string>
     <string name="settings_misc">杂项</string>
     <string name="settings_misc_logcat">导出日志</string>
diff --git a/mobile/src/main/res/values/strings.xml b/mobile/src/main/res/values/strings.xml
index a9091cc8..af7aa2aa 100644
--- a/mobile/src/main/res/values/strings.xml
+++ b/mobile/src/main/res/values/strings.xml
@@ -43,7 +43,7 @@
     <string name="connected_state_failed">Lost from %s</string>
 
     <string name="settings_service">Service</string>
-    <string name="settings_service_dns">Downstream DNS server:port</string>
+    <string name="settings_service_dns">Downstream DNS server[:port]</string>
     <string name="settings_service_clean">Clean/reapply routing rules</string>
     <string name="settings_misc">Misc</string>
     <string name="settings_misc_logcat">Export logcat</string>
diff --git a/mobile/src/main/res/xml/pref_settings.xml b/mobile/src/main/res/xml/pref_settings.xml
index d8720fb2..8ba09a2d 100644
--- a/mobile/src/main/res/xml/pref_settings.xml
+++ b/mobile/src/main/res/xml/pref_settings.xml
@@ -7,7 +7,7 @@
             android:title="@string/settings_service_dns"
             android:summary="%s"
             android:singleLine="true"
-            android:defaultValue="8.8.8.8:53"/>
+            android:defaultValue="8.8.8.8"/>
         <Preference
             android:key="service.clean"
             android:title="@string/settings_service_clean"/>