diff --git a/Lidgren.Network/NetReliableSenderChannel.cs b/Lidgren.Network/NetReliableSenderChannel.cs
index 375f1d2..ade2e9d 100644
--- a/Lidgren.Network/NetReliableSenderChannel.cs
+++ b/Lidgren.Network/NetReliableSenderChannel.cs
@@ -52,10 +52,7 @@ namespace Lidgren.Network
 		internal override NetSendResult Enqueue(NetOutgoingMessage message)
 		{
 			m_queuedSends.Enqueue(message);
-
-			int queueLen = m_queuedSends.Count;
-			int left = m_windowSize - ((m_sendStart + NetConstants.NumSequenceNumbers) - m_windowStart) % NetConstants.NumSequenceNumbers;
-			if (queueLen <= left)
+			if (m_queuedSends.Count <= GetAllowedSends())
 				return NetSendResult.Sent;
 			return NetSendResult.Queued;
 		}
diff --git a/Lidgren.Network/NetUnreliableSenderChannel.cs b/Lidgren.Network/NetUnreliableSenderChannel.cs
index 29a88ab..f1553af 100644
--- a/Lidgren.Network/NetUnreliableSenderChannel.cs
+++ b/Lidgren.Network/NetUnreliableSenderChannel.cs
@@ -45,7 +45,7 @@ namespace Lidgren.Network
 		internal override NetSendResult Enqueue(NetOutgoingMessage message)
 		{
 			int queueLen = m_queuedSends.Count + 1;
-			int left = m_windowSize - ((m_sendStart + NetConstants.NumSequenceNumbers) - m_windowStart) % NetConstants.NumSequenceNumbers;
+			int left = GetAllowedSends();
 			if (queueLen > left)
 				return NetSendResult.Dropped;