diff --git a/plugin/antiabuse/anti.go b/plugin/antiabuse/anti.go
index 62ac4bb0..0a5ac2c8 100644
--- a/plugin/antiabuse/anti.go
+++ b/plugin/antiabuse/anti.go
@@ -2,7 +2,6 @@
 package antiabuse
 
 import (
-	"strconv"
 	"strings"
 	"time"
 
@@ -61,14 +60,11 @@ func init() {
 		}
 		uid := ctx.Event.UserID
 		gid := ctx.Event.GroupID
-		grp := strconv.FormatInt(gid, 36)
 		msg := strings.ReplaceAll(ctx.MessageString(), "\n", "")
 		msg = strings.ReplaceAll(msg, "\r", "")
 		msg = strings.ReplaceAll(msg, "\t", "")
 		msg = strings.ReplaceAll(msg, ";", "")
-		db.RLock()
-		defer db.RUnlock()
-		if db.CanFind(grp, "WHERE instr('"+msg+"', word)>=0") {
+		if db.isInAntiList(uid, gid, msg) {
 			if err := ctx.State["manager"].(*ctrl.Control[*zero.Ctx]).Manager.DoBlock(uid); err == nil {
 				cache.Set(uid, struct{}{})
 				ctx.SetGroupBan(gid, uid, 4*3600)
diff --git a/plugin/antiabuse/db.go b/plugin/antiabuse/db.go
index 13261809..09af2a67 100644
--- a/plugin/antiabuse/db.go
+++ b/plugin/antiabuse/db.go
@@ -20,6 +20,13 @@ type banWord struct {
 
 var nilban = &banWord{}
 
+func (db *antidb) isInAntiList(uid, gid int64, msg string) bool {
+	grp := strconv.FormatInt(gid, 36)
+	db.RLock()
+	defer db.RUnlock()
+	return db.CanFind(grp, "WHERE instr('"+msg+"', word)>=0")
+}
+
 func (db *antidb) insertWord(gid int64, word string) error {
 	grp := strconv.FormatInt(gid, 36)
 	db.Lock()