diff --git a/LiteNetLib/NetManager.cs b/LiteNetLib/NetManager.cs
index 8910c3e4..e6a096c1 100644
--- a/LiteNetLib/NetManager.cs
+++ b/LiteNetLib/NetManager.cs
@@ -169,7 +169,7 @@ private struct IncomingData
         private readonly Dictionary<IPEndPoint, ConnectionRequest> _requestsDict;
         private readonly ReaderWriterLockSlim _peersLock;
         private volatile NetPeer _headPeer;
-        private int _connectedPeersCount;
+        private volatile int _connectedPeersCount;
         private readonly List<NetPeer> _connectedPeerListCache;
         private NetPeer[] _peersArray;
         private readonly PacketLayerBase _extraPacketLayer;