diff --git a/shadowsocks-csharp/3rd/zxing/common/StringUtils.cs b/shadowsocks-csharp/3rd/zxing/common/StringUtils.cs
index 55b5ec91..f15fd8e6 100755
--- a/shadowsocks-csharp/3rd/zxing/common/StringUtils.cs
+++ b/shadowsocks-csharp/3rd/zxing/common/StringUtils.cs
@@ -30,16 +30,16 @@ namespace ZXing.Common
 #if (WINDOWS_PHONE70 || WINDOWS_PHONE71 || WINDOWS_PHONE80 || SILVERLIGHT4 || SILVERLIGHT5 || NETFX_CORE || PORTABLE)
       private const String PLATFORM_DEFAULT_ENCODING = "UTF-8";
 #else
-      private static String PLATFORM_DEFAULT_ENCODING = Encoding.Default.WebName;
+      private static string PLATFORM_DEFAULT_ENCODING = Encoding.Default.WebName;
 #endif
-      public static String SHIFT_JIS = "SJIS";
-      public static String GB2312 = "GB2312";
-      private const String EUC_JP = "EUC-JP";
-      private const String UTF8 = "UTF-8";
-      private const String ISO88591 = "ISO-8859-1";
+      public static string SHIFT_JIS = "SJIS";
+      public static string GB2312 = "GB2312";
+      private const string EUC_JP = "EUC-JP";
+      private const string UTF8 = "UTF-8";
+      private const string ISO88591 = "ISO-8859-1";
       private static readonly bool ASSUME_SHIFT_JIS =
-         String.Compare(SHIFT_JIS, PLATFORM_DEFAULT_ENCODING, StringComparison.OrdinalIgnoreCase) == 0 ||
-         String.Compare(EUC_JP, PLATFORM_DEFAULT_ENCODING, StringComparison.OrdinalIgnoreCase) == 0;
+         string.Equals(SHIFT_JIS, PLATFORM_DEFAULT_ENCODING, StringComparison.OrdinalIgnoreCase) ||
+         string.Equals(EUC_JP, PLATFORM_DEFAULT_ENCODING, StringComparison.OrdinalIgnoreCase);
 
       /// <summary>
       /// Guesses the encoding.
diff --git a/shadowsocks-csharp/FodyWeavers.xml b/shadowsocks-csharp/FodyWeavers.xml
index 2e6d4a7a..6e33a3fc 100644
--- a/shadowsocks-csharp/FodyWeavers.xml
+++ b/shadowsocks-csharp/FodyWeavers.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Weavers>
-	<Costura/>
-  
+  <Costura />
+  <Caseless />
 </Weavers>
\ No newline at end of file
diff --git a/shadowsocks-csharp/packages.config b/shadowsocks-csharp/packages.config
index 2230519e..c0fab934 100644
--- a/shadowsocks-csharp/packages.config
+++ b/shadowsocks-csharp/packages.config
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
+  <package id="Caseless.Fody" version="1.3.7" targetFramework="net40-client" developmentDependency="true" />
   <package id="Costura.Fody" version="1.3.3.0" targetFramework="net4-client" developmentDependency="true" />
   <package id="Fody" version="1.29.4" targetFramework="net40-client" developmentDependency="true" />
   <package id="Microsoft.Bcl" version="1.1.10" targetFramework="net40-client" />