diff --git a/weed/server/master_server.go b/weed/server/master_server.go
index 7f9bff389..98fb6aab1 100644
--- a/weed/server/master_server.go
+++ b/weed/server/master_server.go
@@ -67,7 +67,7 @@ type MasterServer struct {
 	boundedLeaderChan chan int
 
 	onPeerUpdateDoneCn         chan string
-	onPeerUpdateGoroutineCount uint32
+	onPeerUpdateGoroutineCount int32
 
 	// notifying clients
 	clientChansLock sync.RWMutex
@@ -367,16 +367,16 @@ func (ms *MasterServer) OnPeerUpdate(update *master_pb.ClusterNodeUpdate, startF
 					hashicorpRaft.ServerAddress(peerAddress.ToGrpcAddress()), 0, 0)
 			}
 		}
-		if atomic.LoadUint32(&ms.onPeerUpdateGoroutineCount) > 0 {
+		if atomic.LoadInt32(&ms.onPeerUpdateGoroutineCount) > 0 {
 			ms.onPeerUpdateDoneCn <- peerName
 		}
 	} else if isLeader {
 		go func(peerName string) {
 			raftServerRemovalTimeAfter := time.After(RaftServerRemovalTime)
 			raftServerPingTicker := time.NewTicker(5 * time.Minute)
-			atomic.AddUint32(&ms.onPeerUpdateGoroutineCount, 1)
+			atomic.AddInt32(&ms.onPeerUpdateGoroutineCount, 1)
 			defer func() {
-				atomic.AddUint32(&ms.onPeerUpdateGoroutineCount, -1)
+				atomic.AddInt32(&ms.onPeerUpdateGoroutineCount, -1)
 			}()
 			for {
 				select {