diff --git a/src/Spring/Spring.Services/Spring.Services.2005.csproj b/src/Spring/Spring.Services/Spring.Services.2005.csproj
index b8078344..2a93cf8b 100644
--- a/src/Spring/Spring.Services/Spring.Services.2005.csproj
+++ b/src/Spring/Spring.Services/Spring.Services.2005.csproj
@@ -125,6 +125,11 @@
     <Compile Include="Remoting\SaoFactoryObject.cs">
       <SubType>Code</SubType>
     </Compile>
+    <Compile Include="ServiceModel\Activation\ServiceHostFactory.cs" />
+    <Compile Include="ServiceModel\Activation\ServiceHostFactoryObject.cs" />
+    <Compile Include="ServiceModel\ServiceExporter.cs" />
+    <Compile Include="ServiceModel\SpringServiceHost.cs" />
+    <Compile Include="ServiceModel\Support\ServiceProxyTypeBuilder.cs" />
     <Compile Include="Web\Services\WebServiceProxyFactory.cs">
       <SubType>Code</SubType>
     </Compile>