diff --git a/app/src/main/java/io/legado/app/data/entities/SearchBook.kt b/app/src/main/java/io/legado/app/data/entities/SearchBook.kt
index 0f92b5eae..0b537e8fd 100644
--- a/app/src/main/java/io/legado/app/data/entities/SearchBook.kt
+++ b/app/src/main/java/io/legado/app/data/entities/SearchBook.kt
@@ -66,7 +66,15 @@ data class SearchBook(
 
     @Ignore
     @IgnoredOnParcel
-    val origins: LinkedHashSet<String>? = null
+    var origins: LinkedHashSet<String>? = null
+        private set
+
+    fun addOrigin(origin: String) {
+        if (origins == null) {
+            origins = linkedSetOf()
+        }
+        origins?.add(origin)
+    }
 
     fun toBook(): Book {
         return Book(