diff --git a/kernel/api/system.go b/kernel/api/system.go
index ca3d1d2ca..5908cebb0 100644
--- a/kernel/api/system.go
+++ b/kernel/api/system.go
@@ -22,7 +22,6 @@ import (
 	"os"
 	"path/filepath"
 	"strings"
-	"sync"
 	"time"
 
 	"github.com/88250/gulu"
@@ -166,7 +165,7 @@ func getEmojiConf(c *gin.Context) {
 	items := []map[string]interface{}{}
 	custom["items"] = items
 	if gulu.File.IsDir(customConfDir) {
-		model.CustomEmojis = sync.Map{}
+		model.ClearCustomEmojis()
 		customEmojis, err := os.ReadDir(customConfDir)
 		if err != nil {
 			logging.LogErrorf("read custom emojis failed: %s", err)
@@ -224,7 +223,7 @@ func addCustomEmoji(name string, items *[]map[string]interface{}) {
 	*items = append(*items, emoji)
 
 	imgSrc := "/emojis/" + name
-	model.CustomEmojis.Store(nameWithoutExt, imgSrc)
+	model.AddCustomEmoji(nameWithoutExt, imgSrc)
 }
 
 func checkUpdate(c *gin.Context) {
diff --git a/kernel/model/conf.go b/kernel/model/conf.go
index 9e40090a3..5b0eb9f64 100644
--- a/kernel/model/conf.go
+++ b/kernel/model/conf.go
@@ -691,7 +691,15 @@ func Close(force, setCurrentWorkspace bool, execInstallPkg int) (exitCode int) {
 	return
 }
 
-var CustomEmojis = sync.Map{}
+var customEmojis = sync.Map{}
+
+func AddCustomEmoji(emojiName, imgSrc string) {
+	customEmojis.Store(emojiName, imgSrc)
+}
+
+func ClearCustomEmojis() {
+	customEmojis.Clear()
+}
 
 func NewLute() (ret *lute.Lute) {
 	ret = util.NewLute()
@@ -701,7 +709,7 @@ func NewLute() (ret *lute.Lute) {
 	ret.SetSpellcheck(Conf.Editor.Spellcheck)
 
 	customEmojiMap := map[string]string{}
-	CustomEmojis.Range(func(key, value interface{}) bool {
+	customEmojis.Range(func(key, value interface{}) bool {
 		customEmojiMap[key.(string)] = value.(string)
 		return true
 	})