diff --git a/app/src/main/java/io/legado/app/data/dao/BookGroupDao.kt b/app/src/main/java/io/legado/app/data/dao/BookGroupDao.kt
index 453a45f3e..9c362151e 100644
--- a/app/src/main/java/io/legado/app/data/dao/BookGroupDao.kt
+++ b/app/src/main/java/io/legado/app/data/dao/BookGroupDao.kt
@@ -25,7 +25,7 @@ interface BookGroupDao {
     @get:Query("SELECT sum(groupId) FROM book_groups where groupId >= 0")
     val idsSum: Long
 
-    @get:Query("SELECT MAX(`order`) FROM book_groups")
+    @get:Query("SELECT MAX(`order`) FROM book_groups where groupId >= 0")
     val maxOrder: Int
 
     @get:Query("SELECT * FROM book_groups ORDER BY `order`")