diff --git a/kernel/go.mod b/kernel/go.mod
index ab15c4f7a..409cebcb4 100644
--- a/kernel/go.mod
+++ b/kernel/go.mod
@@ -36,7 +36,7 @@ require (
 	github.com/panjf2000/ants/v2 v2.6.0
 	github.com/patrickmn/go-cache v2.1.0+incompatible
 	github.com/radovskyb/watcher v1.0.7
-	github.com/siyuan-note/dejavu v0.0.0-20221102102630-25556844ddab
+	github.com/siyuan-note/dejavu v0.0.0-20221102120909-ed9ad2509c64
 	github.com/siyuan-note/encryption v0.0.0-20220713091850-5ecd92177b75
 	github.com/siyuan-note/eventbus v0.0.0-20220916025349-3ac6e75522da
 	github.com/siyuan-note/filelock v0.0.0-20221007163134-7e64809023ef
diff --git a/kernel/go.sum b/kernel/go.sum
index 32093fa62..82305d8e3 100644
--- a/kernel/go.sum
+++ b/kernel/go.sum
@@ -353,10 +353,8 @@ github.com/shurcooL/reactions v0.0.0-20181006231557-f2e0b4ca5b82/go.mod h1:TCR1l
 github.com/shurcooL/sanitized_anchor_name v0.0.0-20170918181015-86672fcb3f95/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
 github.com/shurcooL/users v0.0.0-20180125191416-49c67e49c537/go.mod h1:QJTqeLYEDaXHZDBsXlPCDqdhQuJkuw4NOtaxYe3xii4=
 github.com/shurcooL/webdavfs v0.0.0-20170829043945-18c3829fa133/go.mod h1:hKmq5kWdCj2z2KEozexVbfEZIWiTjhE0+UjmZgPqehw=
-github.com/siyuan-note/dejavu v0.0.0-20221102101918-9258bfd2c7ca h1:yxlwyy/GxuzIBhTadAxjXNGAJYc3yrTjX8Yqq1SlVg4=
-github.com/siyuan-note/dejavu v0.0.0-20221102101918-9258bfd2c7ca/go.mod h1:+U86jfsvpacZBThE3Ouf/ZQ4EsB4jGPJsMO2iuRv0LQ=
-github.com/siyuan-note/dejavu v0.0.0-20221102102630-25556844ddab h1:pQJRm7GFp7DS3kCqlGVLq5T1jnIVNwOytbkr1BjByvY=
-github.com/siyuan-note/dejavu v0.0.0-20221102102630-25556844ddab/go.mod h1:+U86jfsvpacZBThE3Ouf/ZQ4EsB4jGPJsMO2iuRv0LQ=
+github.com/siyuan-note/dejavu v0.0.0-20221102120909-ed9ad2509c64 h1:psY8hXz/t7cwqJFR+6+vebb5s3P1AzqfkaJ+gIQGLjw=
+github.com/siyuan-note/dejavu v0.0.0-20221102120909-ed9ad2509c64/go.mod h1:+U86jfsvpacZBThE3Ouf/ZQ4EsB4jGPJsMO2iuRv0LQ=
 github.com/siyuan-note/encryption v0.0.0-20220713091850-5ecd92177b75 h1:Bi7/7f29LW+Fm0cHc0J1NO1cZqyJwljSWVmfOqVZgaE=
 github.com/siyuan-note/encryption v0.0.0-20220713091850-5ecd92177b75/go.mod h1:H8fyqqAbp9XreANjeSbc72zEdFfKTXYN34tc1TjZwtw=
 github.com/siyuan-note/eventbus v0.0.0-20220916025349-3ac6e75522da h1:/jNhl7LC+9BhkWvNxuJDdsNfA/2wvfuj9mqWx4CbV90=
diff --git a/kernel/model/repository.go b/kernel/model/repository.go
index ce536dc53..84da78951 100644
--- a/kernel/model/repository.go
+++ b/kernel/model/repository.go
@@ -1009,7 +1009,7 @@ func subscribeEvents() {
 }
 
 func buildCloudConf() (ret *cloud.Conf, err error) {
-	if !IsValidCloudDirName(Conf.Sync.CloudName) {
+	if !cloud.IsValidCloudDirName(Conf.Sync.CloudName) {
 		logging.LogWarnf("invalid cloud repo name, rename it to [main]")
 		Conf.Sync.CloudName = "main"
 		Conf.Save()
diff --git a/kernel/model/sync.go b/kernel/model/sync.go
index f035e87ca..eb578ec88 100644
--- a/kernel/model/sync.go
+++ b/kernel/model/sync.go
@@ -25,7 +25,6 @@ import (
 	"strings"
 	"sync"
 	"time"
-	"unicode/utf8"
 
 	"github.com/88250/gulu"
 	"github.com/dustin/go-humanize"
@@ -70,7 +69,7 @@ func BootSyncData() {
 	util.IncBootProgress(3, "Syncing data from the cloud...")
 	BootSyncSucc = 0
 
-	if !IsSubscriber() || !Conf.Sync.Enabled || "" == Conf.Sync.CloudName || !IsValidCloudDirName(Conf.Sync.CloudName) {
+	if !IsSubscriber() || !Conf.Sync.Enabled || "" == Conf.Sync.CloudName || !cloud.IsValidCloudDirName(Conf.Sync.CloudName) {
 		return
 	}
 
@@ -135,7 +134,7 @@ func SyncData(boot, exit, byHand bool) {
 		return
 	}
 
-	if !IsValidCloudDirName(Conf.Sync.CloudName) {
+	if !cloud.IsValidCloudDirName(Conf.Sync.CloudName) {
 		return
 	}
 
@@ -297,7 +296,7 @@ func CreateCloudSyncDir(name string) (err error) {
 
 	name = strings.TrimSpace(name)
 	name = gulu.Str.RemoveInvisible(name)
-	if !IsValidCloudDirName(name) {
+	if !cloud.IsValidCloudDirName(name) {
 		return errors.New(Conf.Language(37))
 	}
 
@@ -405,24 +404,6 @@ func formatErrorMsg(err error) string {
 	return msg
 }
 
-func IsValidCloudDirName(cloudDirName string) bool {
-	if 16 < utf8.RuneCountInString(cloudDirName) || 1 > utf8.RuneCountInString(cloudDirName) {
-		return false
-	}
-
-	chars := []byte{'~', '`', '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '+', '=',
-		'[', ']', '{', '}', '\\', '|', ';', ':', '\'', '"', '<', ',', '>', '.', '?', '/', ' '}
-	var charsStr string
-	for _, char := range chars {
-		charsStr += string(char)
-	}
-
-	if strings.ContainsAny(cloudDirName, charsStr) {
-		return false
-	}
-	return true
-}
-
 func getIgnoreLines() (ret []string) {
 	ignore := filepath.Join(util.DataDir, ".siyuan", "syncignore")
 	err := os.MkdirAll(filepath.Dir(ignore), 0755)