diff --git a/lib/csharp/src/Thrift.csproj b/lib/csharp/src/Thrift.csproj
index f38d315..b7e2108 100644
--- a/lib/csharp/src/Thrift.csproj
+++ b/lib/csharp/src/Thrift.csproj
@@ -58,6 +58,7 @@
     <Compile Include="TApplicationException.cs" />
     <Compile Include="TProcessor.cs" />
     <Compile Include="Transport\TBufferedTransport.cs" />
+    <Compile Include="Transport\TFramedTransport.cs" />
     <Compile Include="Transport\TServerSocket.cs" />
     <Compile Include="Transport\TServerTransport.cs" />
     <Compile Include="Transport\TSocket.cs" />
@@ -70,4 +71,4 @@
   <ProjectExtensions>
     <VisualStudio AllowExistingFolder="true" />
   </ProjectExtensions>
-</Project>
\ No newline at end of file
+</Project>