Visual Studio 2017 mistakenly thinks EF 6 is installed

I upgraded my ASP.NET Core, EF Core class library solution to Visual Studio 2017.

However when I want to run migrations commands like Add-Migration I get the following warning.

Both Entity Framework Core and Entity Framework 6 are installed. The Entity Framework Core tools are running. Use 'EntityFramework\Update-Database' for Entity Framework 6.

However I don't have EF 6 installed

My csproj

    ...

  <ItemGroup>
    <PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="1.1.1" />
    <PackageReference Include="Microsoft.CSharp" Version="4.3.0" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="1.1.1" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="1.1.1" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="1.1.0" />
    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="1.1.1" />
    <PackageReference Include="System.Collections" Version="4.3.0" />
    <PackageReference Include="System.Linq" Version="4.3.0" />
    <PackageReference Include="System.Runtime" Version="4.3.0" />
    <PackageReference Include="System.Threading" Version="4.3.0" />
  </ItemGroup>

  <ItemGroup Condition=" '$(TargetFramework)' == 'net452' ">
    <Reference Include="System" />
    <Reference Include="Microsoft.CSharp" />
  </ItemGroup>

  <ItemGroup>
    <DotNetCliToolReference Include="Microsoft.EntityFrameworkCore.Tools.DotNet" Version="1.0.0" />
  </ItemGroup>

  <ItemGroup>
    <Folder Include="Migrations\" />
  </ItemGroup>

</Project>