diff --git a/app/src/main/java/io/legado/app/ui/config/PrefDelegate.kt b/app/src/main/java/io/legado/app/ui/config/PrefDelegate.kt
index 495fc67d5..9dad8c6f0 100644
--- a/app/src/main/java/io/legado/app/ui/config/PrefDelegate.kt
+++ b/app/src/main/java/io/legado/app/ui/config/PrefDelegate.kt
@@ -12,11 +12,12 @@ import io.legado.app.utils.getPrefFloat
 import io.legado.app.utils.getPrefInt
 import io.legado.app.utils.getPrefLong
 import io.legado.app.utils.getPrefString
+import io.legado.app.utils.putPrefString
 import io.legado.app.utils.putPrefBoolean
 import io.legado.app.utils.putPrefFloat
 import io.legado.app.utils.putPrefInt
 import io.legado.app.utils.putPrefLong
-import io.legado.app.utils.putPrefString
+import io.legado.app.utils.putPrefStringSync
 import splitties.init.appCtx
 import kotlin.properties.ReadWriteProperty
 import kotlin.reflect.KProperty
@@ -84,7 +85,7 @@ fun <T> prefDelegate(
         override fun setValue(thisRef: Any?, property: KProperty<*>, value: T) {
             if (_value.value != value) {
                 when (value) {
-                    is String? -> appCtx.putPrefString(key, value)
+                    is String? -> appCtx.putPrefStringSync(key, value)
                     is Int -> appCtx.putPrefInt(key, value)
                     is Boolean -> appCtx.putPrefBoolean(key, value)
                     is Long -> appCtx.putPrefLong(key, value)
diff --git a/app/src/main/java/io/legado/app/utils/ContextExtensions.kt b/app/src/main/java/io/legado/app/utils/ContextExtensions.kt
index 41b26c2bf..d7ddc57c1 100644
--- a/app/src/main/java/io/legado/app/utils/ContextExtensions.kt
+++ b/app/src/main/java/io/legado/app/utils/ContextExtensions.kt
@@ -223,6 +223,9 @@ fun Context.getPrefString(key: String, defValue: String? = null) =
 fun Context.putPrefString(key: String, value: String?) =
     defaultSharedPreferences.edit { putString(key, value) }
 
+fun Context.putPrefStringSync(key: String, value: String?) =
+    defaultSharedPreferences.edit(commit = true) { putString(key, value) }
+
 fun Context.getPrefStringSet(
     key: String,
     defValue: MutableSet<String>? = null,