diff --git a/kernel/api/block.go b/kernel/api/block.go
index 3e5ac4a37..5301270c2 100644
--- a/kernel/api/block.go
+++ b/kernel/api/block.go
@@ -40,7 +40,14 @@ func transferBlockRef(c *gin.Context) {
 	}
 
 	fromID := arg["fromID"].(string)
+	if util.InvalidIDPattern(fromID, ret) {
+		return
+	}
 	toID := arg["toID"].(string)
+	if util.InvalidIDPattern(toID, ret) {
+		return
+	}
+
 	err := model.TransferBlockRef(fromID, toID)
 	if nil != err {
 		ret.Code = -1
diff --git a/kernel/model/index_fix.go b/kernel/model/index_fix.go
index 65b2fc920..67a77f0fa 100644
--- a/kernel/model/index_fix.go
+++ b/kernel/model/index_fix.go
@@ -41,11 +41,13 @@ import (
 func FixIndexJob() {
 	task.AppendTask(task.DatabaseIndexFix, removeDuplicateDatabaseIndex)
 	sql.WaitForWritingDatabase()
+
 	task.AppendTask(task.DatabaseIndexFix, fixBlockTreeByFileSys)
 	sql.WaitForWritingDatabase()
-	task.AppendTask(task.DatabaseIndexFix, fixDatabaseIndexByBlockTree)
 
+	task.AppendTask(task.DatabaseIndexFix, fixDatabaseIndexByBlockTree)
 	sql.WaitForWritingDatabase()
+
 	util.PushStatusBar(Conf.Language(185))
 	debug.FreeOSMemory()
 }