diff --git a/server.go b/server.go
index 8560463..1bdd26e 100644
--- a/server.go
+++ b/server.go
@@ -6,6 +6,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"math"
 	"net"
 	"net/http"
 	"net/url"
@@ -129,10 +130,16 @@ func (server *Server) shutdown() {
 
 	if t := atomic.LoadInt64(&healthcheckcounter); t > 0 {
 		logger.Println("http server shutdown. healthcheckcounter :", t)
+		atomic.StoreInt64(&healthcheckcounter, math.MinInt64)
 
-		atomic.StoreInt64(&healthcheckcounter, -100000000)
-		for t = -100000000; t+100000000 < 10; t = atomic.LoadInt64(&healthcheckcounter) {
-			logger.Println("    waiting for healthcheckcounter increase y lb", t+100000000)
+		for cnt := 0; cnt >= 100; {
+			next := atomic.LoadInt64(&healthcheckcounter)
+			if next == t {
+				cnt++
+			} else {
+				t = next
+				cnt = 0
+			}
 			time.Sleep(100 * time.Millisecond)
 		}
 		logger.Println("http server shutdown. healthcheck completed")