diff --git a/app/src/main/java/com/huanchengfly/tieba/post/fragments/PreferencesFragment.kt b/app/src/main/java/com/huanchengfly/tieba/post/fragments/PreferencesFragment.kt
index d97f43fc..4a4160e2 100644
--- a/app/src/main/java/com/huanchengfly/tieba/post/fragments/PreferencesFragment.kt
+++ b/app/src/main/java/com/huanchengfly/tieba/post/fragments/PreferencesFragment.kt
@@ -258,7 +258,7 @@ class PreferencesFragment : PreferencesFragment() {
         aboutPreference!!.summary =
             getString(R.string.tip_about, BuildConfig.VERSION_NAME)
         refresh()
-        findPreference<SwitchPreference>("enableNewUi")?.setOnPreferenceChangeListener { _, newValue ->
+        findPreference<SwitchPreference>("enable_new_ui")?.setOnPreferenceChangeListener { _, newValue ->
             App.INSTANCE.setIcon(newValue == true)
             true
         }
diff --git a/app/src/main/java/com/huanchengfly/tieba/post/ui/page/settings/more/MoreSettingsPage.kt b/app/src/main/java/com/huanchengfly/tieba/post/ui/page/settings/more/MoreSettingsPage.kt
index da7ce9de..a3aa1cdb 100644
--- a/app/src/main/java/com/huanchengfly/tieba/post/ui/page/settings/more/MoreSettingsPage.kt
+++ b/app/src/main/java/com/huanchengfly/tieba/post/ui/page/settings/more/MoreSettingsPage.kt
@@ -116,7 +116,7 @@ fun MoreSettingsPage(
                             )
                         }
                     },
-                    key = "enableNewUi",
+                    key = "enable_new_ui",
                     title = stringResource(id = R.string.title_enable_new_ui),
                     defaultChecked = false,
                     summary = stringResource(id = R.string.summary_enable_new_ui),
diff --git a/app/src/main/java/com/huanchengfly/tieba/post/utils/AppPreferencesUtils.kt b/app/src/main/java/com/huanchengfly/tieba/post/utils/AppPreferencesUtils.kt
index 6b9531cf..78e346ba 100644
--- a/app/src/main/java/com/huanchengfly/tieba/post/utils/AppPreferencesUtils.kt
+++ b/app/src/main/java/com/huanchengfly/tieba/post/utils/AppPreferencesUtils.kt
@@ -101,7 +101,7 @@ open class AppPreferencesUtils private constructor(ctx: Context) {
 
     var darkTheme by DataStoreDelegates.string(key = "dark_theme", defaultValue = "grey_dark")
 
-    var enableNewUi by DataStoreDelegates.boolean(defaultValue = false)
+    var enableNewUi by DataStoreDelegates.boolean(key = "enable_new_ui", defaultValue = true)
 
     var useDynamicColorTheme by DataStoreDelegates.boolean(defaultValue = false)
 
diff --git a/app/src/main/res/xml/preferences.xml b/app/src/main/res/xml/preferences.xml
index 1f585c1c..e50baff3 100644
--- a/app/src/main/res/xml/preferences.xml
+++ b/app/src/main/res/xml/preferences.xml
@@ -262,7 +262,7 @@
         <SwitchPreference
             android:defaultValue="true"
             android:icon="@drawable/ic_round_fiber_new"
-            android:key="enableNewUi"
+            android:key="enable_new_ui"
             android:summary="@string/summary_enable_new_ui"
             android:title="@string/title_enable_new_ui" />