Cannote generate shim for System.Data.SqlClient.SqlDataReaderSmi

Here is the error: "Cannot generate shim for System.Data.SqlClient.SqlDataReaderSmi: type is now visible to exported or assembly (System.Data.4.0.0.0.Fakes).

Here is my code:

<Fakes xmlns="http://schemas.microsoft.com/fakes/2011/" Diagnostic="true">
  <Assembly Name="System.Data" Version="4.0.0.0"/>
  <StubGeneration>
    <Clear/>
  </StubGeneration>
  <ShimGeneration>
    <Clear/>
    <Remove FullName="System.Data.SqlClient"/>
    <!--Added Classes-->
    <Add FullName="System.Data.SqlClient.SqlCommand!"/>
    <Add FullName="System.Data.SqlClient.SqlConnection!"/>
    <Add FullName="System.Data.SqlClient.SqlDataRead"/>
  </ShimGeneration>
</Fakes>

I mock the SqlDataReader and need to use Fakes. What am I doing wrong?