diff --git a/app/src/main/java/io/legado/app/help/storage/OldRule.kt b/app/src/main/java/io/legado/app/help/storage/OldRule.kt
index 086c67d9f..3c49817a8 100644
--- a/app/src/main/java/io/legado/app/help/storage/OldRule.kt
+++ b/app/src/main/java/io/legado/app/help/storage/OldRule.kt
@@ -26,7 +26,7 @@ object OldRule {
             source = GSON.fromJsonObject<BookSource>(json)
         }
         runCatching {
-            source ?: let {
+            if (source == null || source?.searchUrl.isNullOrBlank()) {
                 source = BookSource().apply {
                     val jsonItem = jsonPath.parse(json)
                     bookSourceUrl = jsonItem.readString("bookSourceUrl") ?: ""