diff --git a/app/vminsert/main.go b/app/vminsert/main.go
index c279c81eb..e95eb059f 100644
--- a/app/vminsert/main.go
+++ b/app/vminsert/main.go
@@ -7,6 +7,7 @@ import (
 	"net"
 	"net/http"
 	"os"
+	"strings"
 	"sync/atomic"
 	"time"