diff --git a/server.go b/server.go
index 1bdd26e..aa73093 100644
--- a/server.go
+++ b/server.go
@@ -132,7 +132,7 @@ func (server *Server) shutdown() {
 		logger.Println("http server shutdown. healthcheckcounter :", t)
 		atomic.StoreInt64(&healthcheckcounter, math.MinInt64)
 
-		for cnt := 0; cnt >= 100; {
+		for cnt := 0; cnt < 100; {
 			next := atomic.LoadInt64(&healthcheckcounter)
 			if next == t {
 				cnt++