diff --git a/executor/analyze.go b/executor/analyze.go
index 8f87ac944ac4f..16ccce8074156 100644
--- a/executor/analyze.go
+++ b/executor/analyze.go
@@ -18,6 +18,7 @@ import (
 	"context"
 	"fmt"
 	"math"
+	"net"
 	"strconv"
 	"strings"
 	"sync/atomic"
@@ -466,7 +467,7 @@ func AddNewAnalyzeJob(ctx sessionctx.Context, job *statistics.AnalyzeJob) {
 		logutil.BgLogger().Error("failed to get server info", zap.Error(err))
 		instance = "unknown"
 	} else {
-		instance = fmt.Sprintf("%s:%d", serverInfo.IP, serverInfo.Port)
+		instance = net.JoinHostPort(serverInfo.IP, strconv.Itoa(int(serverInfo.Port)))
 	}
 	statsHandle := domain.GetDomain(ctx).StatsHandle()
 	err = statsHandle.InsertAnalyzeJob(job, instance, ctx.GetSessionVars().ConnectionID)