diff --git a/S7.Net.UnitTest/ProtocolTests.cs b/S7.Net.UnitTest/ProtocolTests.cs
index 4cd634d..e63fac6 100644
--- a/S7.Net.UnitTest/ProtocolTests.cs
+++ b/S7.Net.UnitTest/ProtocolTests.cs
@@ -1,14 +1,10 @@
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using Microsoft.VisualStudio.TestTools.UnitTesting;
-using S7.Net;
-
 using System.IO;
+using System.Linq;
+using System.Threading;
 using System.Threading.Tasks;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
 using S7.Net.Protocol;
-using System.Collections;
 
 namespace S7.Net.UnitTest
 {
@@ -69,7 +65,6 @@ namespace S7.Net.UnitTest
             var t = await COTP.TSDU.ReadAsync(m, CancellationToken.None);
             Assert.IsTrue(expected.SequenceEqual(t));
 
-
             // Test all possible byte values. Everything except 0xff should throw an exception.
             var testData = Enumerable.Range(0, 256).Select(i => new { StatusCode = (ReadWriteErrorCode)i, ThrowsException = i != (byte)ReadWriteErrorCode.Success });
 
diff --git a/S7.Net/COTP.cs b/S7.Net/COTP.cs
index 0300295..3e5abbb 100644
--- a/S7.Net/COTP.cs
+++ b/S7.Net/COTP.cs
@@ -91,7 +91,7 @@ namespace S7.Net
             /// <param name="stream">The stream to read from</param>
             /// <returns>Data in TSDU</returns>
             public static async Task<byte[]> ReadAsync(Stream stream, CancellationToken cancellationToken)
-            {                
+            {
                 var segment = await TPDU.ReadAsync(stream, cancellationToken).ConfigureAwait(false);
 
                 if (segment.LastDataUnit)