diff --git a/src/ICSharpCode.SharpZipLib/Core/Exceptions/ValueOutOfRangeException.cs b/src/ICSharpCode.SharpZipLib/Core/Exceptions/ValueOutOfRangeException.cs
index aefefb61e..d41cf9882 100644
--- a/src/ICSharpCode.SharpZipLib/Core/Exceptions/ValueOutOfRangeException.cs
+++ b/src/ICSharpCode.SharpZipLib/Core/Exceptions/ValueOutOfRangeException.cs
@@ -10,14 +10,14 @@ namespace ICSharpCode.SharpZipLib
 	public class ValueOutOfRangeException : StreamDecodingException
 	{
 		/// <summary>
-		/// Initializes a new instance of the ValueOutOfRangeException class naming the the causing variable
+		/// Initializes a new instance of the ValueOutOfRangeException class naming the causing variable
 		/// </summary>
 		/// <param name="nameOfValue">Name of the variable, use: nameof()</param>
 		public ValueOutOfRangeException(string nameOfValue)
 			: base($"{nameOfValue} out of range") { }
 
 		/// <summary>
-		/// Initializes a new instance of the ValueOutOfRangeException class naming the the causing variable,
+		/// Initializes a new instance of the ValueOutOfRangeException class naming the causing variable,
 		/// it's current value and expected range.
 		/// </summary>
 		/// <param name="nameOfValue">Name of the variable, use: nameof()</param>
@@ -28,7 +28,7 @@ public ValueOutOfRangeException(string nameOfValue, long value, long maxValue, l
 			: this(nameOfValue, value.ToString(), maxValue.ToString(), minValue.ToString()) { }
 
 		/// <summary>
-		/// Initializes a new instance of the ValueOutOfRangeException class naming the the causing variable,
+		/// Initializes a new instance of the ValueOutOfRangeException class naming the causing variable,
 		/// it's current value and expected range.
 		/// </summary>
 		/// <param name="nameOfValue">Name of the variable, use: nameof()</param>
diff --git a/src/ICSharpCode.SharpZipLib/Tar/TarBuffer.cs b/src/ICSharpCode.SharpZipLib/Tar/TarBuffer.cs
index 43a6d5cdf..744c13189 100644
--- a/src/ICSharpCode.SharpZipLib/Tar/TarBuffer.cs
+++ b/src/ICSharpCode.SharpZipLib/Tar/TarBuffer.cs
@@ -345,7 +345,7 @@ private bool ReadRecord()
 		{
 			if (inputStream == null)
 			{
-				throw new TarException("no input stream stream defined");
+				throw new TarException("no input stream defined");
 			}
 
 			currentBlockIndex = 0;
@@ -492,7 +492,7 @@ public void WriteBlock(byte[] buffer, int offset)
 
 			if (outputStream == null)
 			{
-				throw new TarException("TarBuffer.WriteBlock - no output stream stream defined");
+				throw new TarException("TarBuffer.WriteBlock - no output stream defined");
 			}
 
 			if ((offset < 0) || (offset >= buffer.Length))
diff --git a/src/ICSharpCode.SharpZipLib/Tar/TarInputStream.cs b/src/ICSharpCode.SharpZipLib/Tar/TarInputStream.cs
index 078ff0a0f..f1a3622de 100644
--- a/src/ICSharpCode.SharpZipLib/Tar/TarInputStream.cs
+++ b/src/ICSharpCode.SharpZipLib/Tar/TarInputStream.cs
@@ -662,7 +662,7 @@ public interface IEntryFactory
 			/// Create a tar entry based on the header information passed
 			/// </summary>
 			/// <param name="headerBuffer">
-			/// Buffer containing header information to create an an entry from.
+			/// Buffer containing header information to create an entry from.
 			/// </param>
 			/// <returns>
 			/// Created TarEntry or descendant class
diff --git a/src/ICSharpCode.SharpZipLib/Zip/Compression/Streams/InflaterInputStream.cs b/src/ICSharpCode.SharpZipLib/Zip/Compression/Streams/InflaterInputStream.cs
index bd49da036..3fb257906 100644
--- a/src/ICSharpCode.SharpZipLib/Zip/Compression/Streams/InflaterInputStream.cs
+++ b/src/ICSharpCode.SharpZipLib/Zip/Compression/Streams/InflaterInputStream.cs
@@ -42,7 +42,7 @@ public InflaterInputBuffer(Stream stream, int bufferSize)
 		#endregion Constructors
 
 		/// <summary>
-		/// Get the length of bytes bytes in the <see cref="RawData"/>
+		/// Get the length of bytes in the <see cref="RawData"/>
 		/// </summary>
 		public int RawLength
 		{
diff --git a/src/ICSharpCode.SharpZipLib/Zip/ZipFile.cs b/src/ICSharpCode.SharpZipLib/Zip/ZipFile.cs
index a408206c2..c12a53df1 100644
--- a/src/ICSharpCode.SharpZipLib/Zip/ZipFile.cs
+++ b/src/ICSharpCode.SharpZipLib/Zip/ZipFile.cs
@@ -130,7 +130,7 @@ public enum TestOperation
 	}
 
 	/// <summary>
-	/// Status returned returned by <see cref="ZipTestResultHandler"/> during testing.
+	/// Status returned by <see cref="ZipTestResultHandler"/> during testing.
 	/// </summary>
 	/// <seealso cref="ZipFile.TestArchive(bool)">TestArchive</seealso>
 	public class TestStatus
diff --git a/src/ICSharpCode.SharpZipLib/Zip/ZipHelperStream.cs b/src/ICSharpCode.SharpZipLib/Zip/ZipHelperStream.cs
index b66716014..dd7d25d94 100644
--- a/src/ICSharpCode.SharpZipLib/Zip/ZipHelperStream.cs
+++ b/src/ICSharpCode.SharpZipLib/Zip/ZipHelperStream.cs
@@ -95,7 +95,7 @@ public ZipHelperStream(Stream stream)
 		#endregion Constructors
 
 		/// <summary>
-		/// Get / set a value indicating whether the the underlying stream is owned or not.
+		/// Get / set a value indicating whether the underlying stream is owned or not.
 		/// </summary>
 		/// <remarks>If the stream is owned it is closed when this instance is closed.</remarks>
 		public bool IsStreamOwner