diff --git a/SharpCompress/Archive/IWritableArchive.Extensions.cs b/SharpCompress/Archive/IWritableArchive.Extensions.cs
index 83d45d40..2b577caa 100644
--- a/SharpCompress/Archive/IWritableArchive.Extensions.cs
+++ b/SharpCompress/Archive/IWritableArchive.Extensions.cs
@@ -60,7 +60,7 @@ namespace SharpCompress.Archive
             this IWritableArchive writableArchive,
             string filePath, string searchPattern = "*.*", SearchOption searchOption = SearchOption.AllDirectories)
         {
-#if NET2
+#if NET35
             foreach (var path in Directory.GetFiles(filePath, searchPattern, searchOption))
 #else
             foreach (var path in Directory.EnumerateFiles(filePath, searchPattern, searchOption))
diff --git a/SharpCompress/Common/Rar/Headers/RarHeaderFactory.cs b/SharpCompress/Common/Rar/Headers/RarHeaderFactory.cs
index 216d8652..66c9aca4 100644
--- a/SharpCompress/Common/Rar/Headers/RarHeaderFactory.cs
+++ b/SharpCompress/Common/Rar/Headers/RarHeaderFactory.cs
@@ -93,7 +93,7 @@ namespace SharpCompress.Common.Rar.Headers
             {
                 if (!Options.HasFlag(Options.KeepStreamsOpen))
                 {
-#if NET2
+#if NET35
                     reader.Close();
 #else
                     reader.Dispose();
diff --git a/SharpCompress/EnumExtensions.cs b/SharpCompress/EnumExtensions.cs
index e72da2a6..a41fbaed 100644
--- a/SharpCompress/EnumExtensions.cs
+++ b/SharpCompress/EnumExtensions.cs
@@ -1,4 +1,5 @@
-using System;
+#if NET35
+using System;
 
 namespace SharpCompress
 {
@@ -12,4 +13,5 @@ namespace SharpCompress
             return (value & flagVal) == flagVal;
         }
     }
-}
\ No newline at end of file
+}
+#endif
\ No newline at end of file
diff --git a/SharpCompress/SharpCompress.Portable.csproj b/SharpCompress/SharpCompress.Portable.csproj
index 49e43055..2f331a30 100644
--- a/SharpCompress/SharpCompress.Portable.csproj
+++ b/SharpCompress/SharpCompress.Portable.csproj
@@ -287,6 +287,7 @@
     <Compile Include="Crypto\PBKDF2.cs" />
     <Compile Include="Crypto\RijndaelEngine.cs" />
     <Compile Include="Crypto\Sha1Digest.cs" />
+    <Compile Include="EnumExtensions.cs" />
     <Compile Include="IO\CountingWritableSubStream.cs" />
     <Compile Include="IO\ListeningStream.cs" />
     <Compile Include="IO\MarkingBinaryReader.cs" />
diff --git a/SharpCompress/SharpCompress.PortableTest.csproj b/SharpCompress/SharpCompress.PortableTest.csproj
index 71281f16..523e6901 100644
--- a/SharpCompress/SharpCompress.PortableTest.csproj
+++ b/SharpCompress/SharpCompress.PortableTest.csproj
@@ -129,7 +129,7 @@
     <Compile Include="Common\FilePart.cs" />
     <Compile Include="Common\Entry.cs" />
     <Compile Include="Common\IEntry.cs" />
-	<Compile Include="Common\IEntry.Extensions.cs" />
+    <Compile Include="Common\IEntry.Extensions.cs" />
     <Compile Include="Common\IVolume.cs" />
     <Compile Include="Common\Rar\RarCryptoWrapper.cs" />
     <Compile Include="Common\Rar\RarRijndael.Portable.cs" />
@@ -257,6 +257,7 @@
     <Compile Include="Crypto\PBKDF2.cs" />
     <Compile Include="Crypto\RijndaelEngine.cs" />
     <Compile Include="Crypto\Sha1Digest.cs" />
+    <Compile Include="EnumExtensions.cs" />
     <Compile Include="IO\CountingWritableSubStream.cs" />
     <Compile Include="Common\EntryStream.cs">
       <SubType>Code</SubType>
diff --git a/SharpCompress/SharpCompress.Unsigned.csproj b/SharpCompress/SharpCompress.Unsigned.csproj
index bfb80856..86c4aa0f 100644
--- a/SharpCompress/SharpCompress.Unsigned.csproj
+++ b/SharpCompress/SharpCompress.Unsigned.csproj
@@ -131,7 +131,7 @@
     <Compile Include="Common\FilePart.cs" />
     <Compile Include="Common\Entry.cs" />
     <Compile Include="Common\IEntry.cs" />
-	<Compile Include="Common\IEntry.Extensions.cs" />
+    <Compile Include="Common\IEntry.Extensions.cs" />
     <Compile Include="Common\IVolume.cs" />
     <Compile Include="Common\Rar\RarCryptoWrapper.cs" />
     <Compile Include="Common\Rar\RarRijndael.cs" />
@@ -244,6 +244,7 @@
     <Compile Include="Compressor\PPMd\PpmdProperties.cs" />
     <Compile Include="Compressor\PPMd\PpmdStream.cs" />
     <Compile Include="Compressor\Rar\RarStream.cs" />
+    <Compile Include="EnumExtensions.cs" />
     <Compile Include="IO\CountingWritableSubStream.cs" />
     <Compile Include="Common\EntryStream.cs">
       <SubType>Code</SubType>
diff --git a/SharpCompress/SharpCompress.WindowsStore.csproj b/SharpCompress/SharpCompress.WindowsStore.csproj
index b5c5547b..02f9e09b 100644
--- a/SharpCompress/SharpCompress.WindowsStore.csproj
+++ b/SharpCompress/SharpCompress.WindowsStore.csproj
@@ -273,6 +273,7 @@
     <Compile Include="Crypto\RijndaelEngine.cs" />
     <Compile Include="Crypto\Pack.cs" />
     <Compile Include="Crypto\Sha1Digest.cs" />
+    <Compile Include="EnumExtensions.cs" />
     <Compile Include="IO\AppendingStream.cs" />
     <Compile Include="IO\CountingWritableSubStream.cs" />
     <Compile Include="IO\ListeningStream.cs" />
diff --git a/SharpCompress/SharpCompress.csproj b/SharpCompress/SharpCompress.csproj
index fd033f1a..0fd10026 100644
--- a/SharpCompress/SharpCompress.csproj
+++ b/SharpCompress/SharpCompress.csproj
@@ -131,7 +131,7 @@
     <Compile Include="Common\FilePart.cs" />
     <Compile Include="Common\Entry.cs" />
     <Compile Include="Common\IEntry.cs" />
-	<Compile Include="Common\IEntry.Extensions.cs" />
+    <Compile Include="Common\IEntry.Extensions.cs" />
     <Compile Include="Common\IVolume.cs" />
     <Compile Include="Common\Rar\RarCryptoWrapper.cs" />
     <Compile Include="Common\Rar\RarRijndael.cs" />
@@ -244,6 +244,7 @@
     <Compile Include="Compressor\PPMd\PpmdProperties.cs" />
     <Compile Include="Compressor\PPMd\PpmdStream.cs" />
     <Compile Include="Compressor\Rar\RarStream.cs" />
+    <Compile Include="EnumExtensions.cs" />
     <Compile Include="IO\CountingWritableSubStream.cs" />
     <Compile Include="Common\EntryStream.cs">
       <SubType>Code</SubType>
diff --git a/SharpCompress/Writer/IWriter.Extensions.cs b/SharpCompress/Writer/IWriter.Extensions.cs
index 6ccdbc68..75029f6f 100644
--- a/SharpCompress/Writer/IWriter.Extensions.cs
+++ b/SharpCompress/Writer/IWriter.Extensions.cs
@@ -35,7 +35,7 @@ namespace SharpCompress.Writer
             {
                 throw new ArgumentException("Directory does not exist: " + directory);
             }
-#if NET2
+#if NET35
             foreach (var file in Directory.GetFiles(directory, searchPattern, option))
 #else
             foreach (var file in Directory.EnumerateFiles(directory, searchPattern, option))