diff --git a/.golangci.yml b/.golangci.yml
index ca674a0..4ff3d91 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -28,6 +28,7 @@ linters:
     - errcheck
     - exportloopref
     - exhaustive
+    - bidichk
     #- funlen
     #- goconst
     - gocritic
diff --git a/coolq/bot.go b/coolq/bot.go
index b190049..2b7cafa 100644
--- a/coolq/bot.go
+++ b/coolq/bot.go
@@ -542,7 +542,6 @@ func (bot *CQBot) InsertGuildChannelMessage(m *message.GuildChannelMessage) stri
 
 // Release 释放Bot实例
 func (bot *CQBot) Release() {
-
 }
 
 func (bot *CQBot) dispatchEventMessage(m global.MSG) {
diff --git a/internal/btree/btree_test.go b/internal/btree/btree_test.go
index 5afc4ae..d617570 100644
--- a/internal/btree/btree_test.go
+++ b/internal/btree/btree_test.go
@@ -28,15 +28,15 @@ func TestBtree(t *testing.T) {
 	bt, err := Create(f)
 	assert2.NoError(t, err)
 
-	var tests = []string{
+	tests := []string{
 		"hello world",
 		"123",
 		"We are met on a great battle-field of that war.",
 		"Abraham Lincoln, November 19, 1863, Gettysburg, Pennsylvania",
 	}
-	var sha = make([]*byte, len(tests))
+	sha := make([]*byte, len(tests))
 	for i, tt := range tests {
-		var hash = sha1.New()
+		hash := sha1.New()
 		hash.Write([]byte(tt))
 		sha[i] = &hash.Sum(nil)[0]
 		bt.Insert(sha[i], []byte(tt))
diff --git a/internal/btree/helper.go b/internal/btree/helper.go
index 4a97610..eb9c1f7 100644
--- a/internal/btree/helper.go
+++ b/internal/btree/helper.go
@@ -45,7 +45,7 @@ func resethash(sha1 *byte) {
 // reading table
 
 func read32(r io.Reader) (int32, error) {
-	var b = make([]byte, 4)
+	b := make([]byte, 4)
 	_, err := r.Read(b)
 	if err != nil {
 		return 0, err
diff --git a/internal/cache/cache.go b/internal/cache/cache.go
index f410626..30cb538 100644
--- a/internal/cache/cache.go
+++ b/internal/cache/cache.go
@@ -66,7 +66,7 @@ func Init() {
 		}
 	}
 
-	var open = func(typ string, cache *Cache) {
+	open := func(typ string, cache *Cache) {
 		file := conf[typ]
 		if file == "" {
 			file = fmt.Sprintf("data/%s.db", typ)
diff --git a/modules/config/config.go b/modules/config/config.go
index 4dee915..56250d6 100644
--- a/modules/config/config.go
+++ b/modules/config/config.go
@@ -141,8 +141,10 @@ func Parse(path string) *Config {
 	return config
 }
 
-var serverconfs []*Server
-var mu sync.Mutex
+var (
+	serverconfs []*Server
+	mu          sync.Mutex
+)
 
 // AddServer 添加该服务的简介和默认配置
 func AddServer(s *Server) {