diff --git a/app/src/main/res/xml/pref_config_backup.xml b/app/src/main/res/xml/pref_config_backup.xml
index dc5ec4f37..bc0c8adc7 100644
--- a/app/src/main/res/xml/pref_config_backup.xml
+++ b/app/src/main/res/xml/pref_config_backup.xml
@@ -37,7 +37,7 @@
             app:iconSpaceReserved="false" />
 
         <io.legado.app.ui.widget.prefs.SwitchPreference
-            android:key="webDavExport"
+            android:key="webDavCacheBackup"
             android:defaultValue="false"
             android:title="@string/webdav_cache_backup"
             android:summary="@string/webdav_cache_backup_s"
@@ -85,4 +85,4 @@
 
     </io.legado.app.ui.widget.prefs.PreferenceCategory>
 
-</androidx.preference.PreferenceScreen>
\ No newline at end of file
+</androidx.preference.PreferenceScreen>