diff --git a/README.md b/README.md
index d7f279b..8afdbc7 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@ Library _almost_ ready for production usage. We need contributors to make 1.0.0
 To use TLSharp follow next steps:
 
 1. Clone TLSharp from GitHub
-1. Compile source with VS2015
+1. Compile source with VS2015 or MonoDevelop
 1. Add reference to ```TLSharp.Core.dll``` to your awesome project.
 
 # Dependencies
@@ -194,6 +194,7 @@ List of donators:
 
 # Contributors
 * [Afshin Arani](http://aarani.ir) - TLGenerator, and a lot of other usefull things
+* [Knocte](https://github.com/knocte)
 
 # License
 
diff --git a/TLSharp.Core/Network/MtProtoSender.cs b/TLSharp.Core/Network/MtProtoSender.cs
index f7c4ef2..2d8babf 100644
--- a/TLSharp.Core/Network/MtProtoSender.cs
+++ b/TLSharp.Core/Network/MtProtoSender.cs
@@ -279,9 +279,7 @@ namespace TLSharp.Core.Network
                 {
                     var resultString = Regex.Match(errorMessage, @"\d+").Value;
                     var dcIdx = int.Parse(resultString);
-                    var exception = new InvalidOperationException($"Your phone number registered to {dcIdx} dc. Please update settings. See https://github.com/sochix/TLSharp#i-get-an-error-migrate_x for details.");
-                    exception.Data.Add("dcId", dcIdx);
-                    throw exception;
+                    throw new MigrationNeededException(dcIdx);
                 }
                 else
                 {
@@ -484,4 +482,15 @@ namespace TLSharp.Core.Network
             return new MemoryStream(new byte[len], 0, len, true, true);
         }
     }
+
+    internal class MigrationNeededException : Exception
+    {
+        internal int DC { get; private set; }
+
+        internal MigrationNeededException(int dc)
+            : base ("$Your phone number is registered to a different dc: {dc}. Please migrate.")
+        {
+            DC = dc;
+        }
+    }
 }
\ No newline at end of file
diff --git a/TLSharp.Core/TLSharp.Core.csproj b/TLSharp.Core/TLSharp.Core.csproj
index dda8970..31fee3a 100644
--- a/TLSharp.Core/TLSharp.Core.csproj
+++ b/TLSharp.Core/TLSharp.Core.csproj
@@ -9,7 +9,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>TLSharp.Core</RootNamespace>
     <AssemblyName>TLSharp.Core</AssemblyName>
-    <TargetFrameworkVersion>v4.5.2</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
diff --git a/TLSharp.Core/TelegramClient.cs b/TLSharp.Core/TelegramClient.cs
index 75d0466..40eefaf 100644
--- a/TLSharp.Core/TelegramClient.cs
+++ b/TLSharp.Core/TelegramClient.cs
@@ -110,16 +110,9 @@ namespace TLSharp.Core
 
                     completed = true;
                 }
-                catch (InvalidOperationException ex)
+                catch (MigrationNeededException ex)
                 {
-                    if (ex.Message.StartsWith("Your phone number registered to") && ex.Data["dcId"] != null)
-                    {
-                        await ReconnectToDcAsync((int)ex.Data["dcId"]);
-                    }
-                    else
-                    {
-                        throw;
-                    }
+                    await ReconnectToDcAsync(ex.DC);
                 }
             }
 
diff --git a/TeleSharp.Generator/TeleSharp.Generator.csproj b/TeleSharp.Generator/TeleSharp.Generator.csproj
index c386fa6..94f3e9b 100644
--- a/TeleSharp.Generator/TeleSharp.Generator.csproj
+++ b/TeleSharp.Generator/TeleSharp.Generator.csproj
@@ -9,7 +9,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>TeleSharp.Generator</RootNamespace>
     <AssemblyName>TeleSharp.Generator</AssemblyName>
-    <TargetFrameworkVersion>v4.5.2</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
   </PropertyGroup>
diff --git a/TeleSharp.TL/TeleSharp.TL.csproj b/TeleSharp.TL/TeleSharp.TL.csproj
index 90f2c27..446410d 100644
--- a/TeleSharp.TL/TeleSharp.TL.csproj
+++ b/TeleSharp.TL/TeleSharp.TL.csproj
@@ -9,7 +9,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>TeleSharp.TL</RootNamespace>
     <AssemblyName>TeleSharp.TL</AssemblyName>
-    <TargetFrameworkVersion>v4.5.2</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">