diff --git a/app/src/main/java/io/legado/app/data/entities/Book.kt b/app/src/main/java/io/legado/app/data/entities/Book.kt
index e207f8c03..ace8e1b1d 100644
--- a/app/src/main/java/io/legado/app/data/entities/Book.kt
+++ b/app/src/main/java/io/legado/app/data/entities/Book.kt
@@ -5,7 +5,7 @@ import androidx.room.*
 import kotlinx.android.parcel.Parcelize
 
 @Parcelize
-@Entity(tableName = "books", indices = [(Index(value = ["descUrl"]))])
+@Entity(tableName = "books", indices = [(Index(value = ["descUrl"], unique = true))])
 data class Book(@PrimaryKey
                 var descUrl: String = "",                   // 详情页Url(本地书源存储完整文件路径)
                 var sourceId: Int = -1,                     // 书源规则id(默认-1,表示本地书籍)
diff --git a/app/src/main/java/io/legado/app/data/entities/ReplaceRule.kt b/app/src/main/java/io/legado/app/data/entities/ReplaceRule.kt
index fdfa41d3f..2436fb641 100644
--- a/app/src/main/java/io/legado/app/data/entities/ReplaceRule.kt
+++ b/app/src/main/java/io/legado/app/data/entities/ReplaceRule.kt
@@ -16,8 +16,8 @@ data class ReplaceRule(
                 val pattern: String? = null,
                 val replacement: String? = null,
                 val scope: String? = null,
-                val isEnabled: Boolean? = null,
-                val isRegex: Boolean? = null,
+                val isEnabled: Boolean = true,
+                val isRegex: Boolean = true,
                 val order: Int = 0
 ) : Parcelable
 
diff --git a/app/src/main/java/io/legado/app/data/entities/Source.kt b/app/src/main/java/io/legado/app/data/entities/Source.kt
index 1c6cfcf18..aa38236b5 100644
--- a/app/src/main/java/io/legado/app/data/entities/Source.kt
+++ b/app/src/main/java/io/legado/app/data/entities/Source.kt
@@ -14,14 +14,14 @@ data class Source(@PrimaryKey(autoGenerate = true)
                   @ColumnInfo(name = "sourceId")
                   var id: Int = 0,                          // 编号
                   var name: String = "",                    // 名称
-                  var origin: String = "",                    // 地址，包括 http/https
+                  var origin: String = "",                  // 地址，包括 http/https
                   var type: Int = 0,                        // 类型，0 文本，1 音频
                   var group: String? = null,                // 分组
                   var header: String? = null,               // header
                   var loginUrl: String? = null,             // 登录地址
                   var isEnabled: Boolean = true,            // 是否启用
                   var lastUpdateTime: Long = 0,             // 最后更新时间，用于排序
-                  var serialNumber: Int = 0,                // 手动排序编号
+                  var customOrder: Int = 0,                 // 手动排序编号
                   var weight: Int = 0,                      // 智能排序的权重
                   var exploreRule: String? = null,          // 发现规则
                   var searchRule: String? = null,           // 搜索规则