diff --git a/SharpCompress/Archive/GZip/GZipArchiveEntry.cs b/SharpCompress/Archive/GZip/GZipArchiveEntry.cs
index 45b2532c..618276fa 100644
--- a/SharpCompress/Archive/GZip/GZipArchiveEntry.cs
+++ b/SharpCompress/Archive/GZip/GZipArchiveEntry.cs
@@ -7,7 +7,7 @@ namespace SharpCompress.Archive.GZip
 {
     public class GZipArchiveEntry : GZipEntry, IArchiveEntry
     {
-        private GZipArchive archive;
+        private readonly GZipArchive archive;
 
         internal GZipArchiveEntry(GZipArchive archive, GZipFilePart part)
             : base(part)
diff --git a/SharpCompress/Archive/Rar/RarArchiveEntry.cs b/SharpCompress/Archive/Rar/RarArchiveEntry.cs
index 3dc86a54..6d3b43dd 100644
--- a/SharpCompress/Archive/Rar/RarArchiveEntry.cs
+++ b/SharpCompress/Archive/Rar/RarArchiveEntry.cs
@@ -97,9 +97,5 @@ namespace SharpCompress.Archive.Rar
                 throw new IncompleteArchiveException("ArchiveEntry is incomplete and cannot perform this operation.");
             }
         }
-
-        internal override void Close()
-        {
-        }
     }
 }
\ No newline at end of file
diff --git a/SharpCompress/Common/Entry.cs b/SharpCompress/Common/Entry.cs
index befd4a38..6127bc7e 100644
--- a/SharpCompress/Common/Entry.cs
+++ b/SharpCompress/Common/Entry.cs
@@ -66,6 +66,9 @@ namespace SharpCompress.Common
 
         internal abstract IEnumerable<FilePart> Parts { get; }
 
-        internal abstract void Close();
+        internal virtual void Close()
+        {
+            
+        }
     }
 }
\ No newline at end of file
diff --git a/SharpCompress/Common/GZip/GZipEntry.cs b/SharpCompress/Common/GZip/GZipEntry.cs
index a857d738..ddc0eec1 100644
--- a/SharpCompress/Common/GZip/GZipEntry.cs
+++ b/SharpCompress/Common/GZip/GZipEntry.cs
@@ -82,9 +82,5 @@ namespace SharpCompress.Common.GZip
         {
             yield return new GZipEntry(new GZipFilePart(stream));
         }
-
-        internal override void Close()
-        {
-        }
     }
 }
\ No newline at end of file
diff --git a/SharpCompress/Common/SevenZip/SevenZipEntry.cs b/SharpCompress/Common/SevenZip/SevenZipEntry.cs
index 242a6a77..9403123f 100644
--- a/SharpCompress/Common/SevenZip/SevenZipEntry.cs
+++ b/SharpCompress/Common/SevenZip/SevenZipEntry.cs
@@ -76,9 +76,5 @@ namespace SharpCompress.Common.SevenZip
         {
             get { return FilePart.AsEnumerable<FilePart>(); }
         }
-
-        internal override void Close()
-        {
-        }
     }
 }
\ No newline at end of file
diff --git a/SharpCompress/Common/Tar/TarEntry.cs b/SharpCompress/Common/Tar/TarEntry.cs
index b44c5f88..2a7c048a 100644
--- a/SharpCompress/Common/Tar/TarEntry.cs
+++ b/SharpCompress/Common/Tar/TarEntry.cs
@@ -100,9 +100,5 @@ namespace SharpCompress.Common.Tar
                 }
             }
         }
-
-        internal override void Close()
-        {
-        }
     }
 }
\ No newline at end of file
diff --git a/SharpCompress/Common/Zip/ZipEntry.cs b/SharpCompress/Common/Zip/ZipEntry.cs
index bb190581..5054639a 100644
--- a/SharpCompress/Common/Zip/ZipEntry.cs
+++ b/SharpCompress/Common/Zip/ZipEntry.cs
@@ -112,9 +112,5 @@ namespace SharpCompress.Common.Zip
         {
             get { return filePart.AsEnumerable<FilePart>(); }
         }
-
-        internal override void Close()
-        {
-        }
     }
 }
\ No newline at end of file
diff --git a/SharpCompress/Reader/Rar/RarReaderEntry.cs b/SharpCompress/Reader/Rar/RarReaderEntry.cs
index 810a1c6f..5e1205ca 100644
--- a/SharpCompress/Reader/Rar/RarReaderEntry.cs
+++ b/SharpCompress/Reader/Rar/RarReaderEntry.cs
@@ -45,9 +45,5 @@ namespace SharpCompress.Reader.Rar
         {
             get { return Part.FileHeader.UncompressedSize; }
         }
-
-        internal override void Close()
-        {
-        }
     }
 }
\ No newline at end of file