diff --git a/Transport/BacnetIpUdpProtocolTransport.cs b/Transport/BacnetIpUdpProtocolTransport.cs
index a3fd84f..9f5959c 100644
--- a/Transport/BacnetIpUdpProtocolTransport.cs
+++ b/Transport/BacnetIpUdpProtocolTransport.cs
@@ -227,7 +227,6 @@ private void OnReceiveData(IAsyncResult asyncResult)
                 }
             }
 
-            var receiveBufferHex = ConvertToHex(receiveBuffer);
             var receivedLength = receiveBuffer.Length;
 
             if (receivedLength == 0) // Empty frame : port scanner maybe
@@ -238,7 +237,7 @@ private void OnReceiveData(IAsyncResult asyncResult)
 
             if (receivedLength < BVLC.BVLC_HEADER_LENGTH)
             {
-                Log.Warn($"Some garbage data got in: {receiveBufferHex}");
+                Log.Warn($"Some garbage data got in: {ConvertToHex(receiveBuffer)}");
                 return;
             }
 
@@ -247,7 +246,7 @@ private void OnReceiveData(IAsyncResult asyncResult)
 
             if (headerLength == -1)
             {
-                Log.Warn($"Unknow BVLC Header in: {receiveBufferHex}");
+                Log.Warn($"Unknow BVLC Header in: {ConvertToHex(receiveBuffer)}");
                 return;
             }
 
@@ -280,7 +279,7 @@ private void OnReceiveData(IAsyncResult asyncResult)
 
             if (receivedLength <= headerLength)
             {
-                Log.Warn($"Missing data, only header received: {receiveBufferHex}");
+                Log.Warn($"Missing data, only header received: {ConvertToHex(receiveBuffer)}");
                 return;
             }