diff --git a/app/src/main/java/io/legado/app/lib/webdav/WebDav.kt b/app/src/main/java/io/legado/app/lib/webdav/WebDav.kt
index 4ca1966c8..f35e41db3 100644
--- a/app/src/main/java/io/legado/app/lib/webdav/WebDav.kt
+++ b/app/src/main/java/io/legado/app/lib/webdav/WebDav.kt
@@ -32,7 +32,7 @@ constructor(url: String) {
             return field
         }
 
-    private val okHttpClient: OkHttpClient = OkHttp.SingletonHelper.okHttpClient
+    private val okHttpClient: OkHttpClient = OkHttp.okHttpClient
 
     val path: String
         get() = url.toString()
@@ -207,7 +207,7 @@ constructor(url: String) {
     fun upload(localPath: String, contentType: String? = null): Boolean {
         val file = File(localPath)
         if (!file.exists()) return false
-        val mediaType = if (contentType == null) null else contentType.toMediaTypeOrNull()
+        val mediaType = contentType?.toMediaTypeOrNull()
         // 务必注意RequestBody不要嵌套，不然上传时内容可能会被追加多余的文件信息
         val fileBody = RequestBody.create(mediaType, file)
         getUrl()?.let {
diff --git a/app/src/main/java/io/legado/app/lib/webdav/http/HttpAuth.kt b/app/src/main/java/io/legado/app/lib/webdav/http/HttpAuth.kt
index 3a6f31b48..07cab5855 100644
--- a/app/src/main/java/io/legado/app/lib/webdav/http/HttpAuth.kt
+++ b/app/src/main/java/io/legado/app/lib/webdav/http/HttpAuth.kt
@@ -3,11 +3,6 @@ package io.legado.app.lib.webdav.http
 object HttpAuth {
 
     var auth: Auth? = null
-        private set
-
-    fun setAuth(user: String, password: String) {
-        auth = Auth(user, password)
-    }
 
     class Auth internal constructor(val user: String, val pass: String)
 
diff --git a/app/src/main/java/io/legado/app/lib/webdav/http/OkHttp.kt b/app/src/main/java/io/legado/app/lib/webdav/http/OkHttp.kt
index f088fc785..6861deb62 100644
--- a/app/src/main/java/io/legado/app/lib/webdav/http/OkHttp.kt
+++ b/app/src/main/java/io/legado/app/lib/webdav/http/OkHttp.kt
@@ -2,10 +2,6 @@ package io.legado.app.lib.webdav.http
 
 import okhttp3.OkHttpClient
 
-class OkHttp private constructor() {
-
-    object SingletonHelper {
-        val okHttpClient: OkHttpClient = OkHttpClient.Builder().build()
-    }
-
-}
+object OkHttp {
+    val okHttpClient: OkHttpClient = OkHttpClient.Builder().build()
+}
\ No newline at end of file