diff --git a/app/src/main/java/io/legado/app/help/ReadBookConfig.kt b/app/src/main/java/io/legado/app/help/ReadBookConfig.kt
index 35cbdf86a..3834c9252 100644
--- a/app/src/main/java/io/legado/app/help/ReadBookConfig.kt
+++ b/app/src/main/java/io/legado/app/help/ReadBookConfig.kt
@@ -371,14 +371,14 @@ object ReadBookConfig {
         var bgType: Int = 0,//白天背景类型 0:颜色, 1:assets图片, 2其它图片
         var bgTypeNight: Int = 0,//夜间背景类型
         var bgTypeEInk: Int = 0,
-        var darkStatusIcon: Boolean = true,//白天是否暗色状态栏
-        var darkStatusIconNight: Boolean = false,//晚上是否暗色状态栏
-        var darkStatusIconEInk: Boolean = true,
-        var textColor: String = "#3E3D3B",//白天文字颜色
-        var textColorNight: String = "#ADADAD",//夜间文字颜色
-        var textColorEInk: String = "#000000",
-        var pageAnim: Int = 0,
-        var pageAnimEInk: Int = 3,
+        private var darkStatusIcon: Boolean = true,//白天是否暗色状态栏
+        private var darkStatusIconNight: Boolean = false,//晚上是否暗色状态栏
+        private var darkStatusIconEInk: Boolean = true,
+        private var textColor: String = "#3E3D3B",//白天文字颜色
+        private var textColorNight: String = "#ADADAD",//夜间文字颜色
+        private var textColorEInk: String = "#000000",
+        private var pageAnim: Int = 0,
+        private var pageAnimEInk: Int = 3,
         var textFont: String = "",//字体
         var textBold: Int = 0,//是否粗体字 0:正常, 1:粗体, 2:细体
         var textSize: Int = 20,//文字大小