diff --git a/remotecache/flashgroupmanager/config.go b/remotecache/flashgroupmanager/config.go
index 92a4cdd3a..18cea78dc 100644
--- a/remotecache/flashgroupmanager/config.go
+++ b/remotecache/flashgroupmanager/config.go
@@ -48,7 +48,7 @@ var AddrDatabase = make(map[uint64]string)
 
 type clusterConfig struct {
 	cfsProto.RemoteCacheConfig
-	httpProxyPoolSize uint64
+	httpProxyPoolSize int
 	heartbeatPort     int64
 	replicaPort       int64
 	peerAddrs         []string
diff --git a/remotecache/flashgroupmanager/http_server.go b/remotecache/flashgroupmanager/http_server.go
index 0f23d9c09..174802eb5 100644
--- a/remotecache/flashgroupmanager/http_server.go
+++ b/remotecache/flashgroupmanager/http_server.go
@@ -2,7 +2,6 @@ package flashgroupmanager
 
 import (
 	"fmt"
-	"math"
 	"net/http"
 	"net/http/httputil"
 	"time"
@@ -163,14 +162,8 @@ func (m *FlashGroupManager) registerAPIMiddleware(route *mux.Router) {
 func (m *FlashGroupManager) newReverseProxy() *httputil.ReverseProxy {
 	tr := &http.Transport{}
 	if m.config != nil {
-		ps := m.config.httpProxyPoolSize // uint64
-		if ps > uint64(math.MaxInt) {
-			log.LogErrorf("newReverseProxy httpProxyPoolSize[%d] invalid", ps)
-			return nil
-		}
-		poolSize := int(ps)
 		tr = proto.GetHttpTransporter(&proto.HttpCfg{
-			PoolSize: poolSize,
+			PoolSize: m.config.httpProxyPoolSize,
 		})
 	}
 
diff --git a/remotecache/flashgroupmanager/server.go b/remotecache/flashgroupmanager/server.go
index f35a402aa..54daf41d8 100644
--- a/remotecache/flashgroupmanager/server.go
+++ b/remotecache/flashgroupmanager/server.go
@@ -200,8 +200,7 @@ func (m *FlashGroupManager) checkConfig(cfg *config.Config) (err error) {
 	if m.id, err = strconv.ParseUint(cfg.GetString(ID), 10, 64); err != nil {
 		return fmt.Errorf("%v,err:%v", proto.ErrInvalidCfg, err.Error())
 	}
-
-	m.config.httpProxyPoolSize = uint64(cfg.GetInt64(HttpReversePoolSize))
+	m.config.httpProxyPoolSize = cfg.GetInt(HttpReversePoolSize)
 	if m.config.httpProxyPoolSize < defaultHttpReversePoolSize {
 		m.config.httpProxyPoolSize = defaultHttpReversePoolSize
 	}