diff --git a/src/Html/Abstractions/ref/Microsoft.AspNetCore.Html.Abstractions.csproj b/src/Html/Abstractions/ref/Microsoft.AspNetCore.Html.Abstractions.csproj
index e27f9b24159b..2b1b278a3ff3 100644
--- a/src/Html/Abstractions/ref/Microsoft.AspNetCore.Html.Abstractions.csproj
+++ b/src/Html/Abstractions/ref/Microsoft.AspNetCore.Html.Abstractions.csproj
@@ -2,6 +2,7 @@
$(DefaultNetCoreTargetFramework)
+ annotations
diff --git a/src/Html/Abstractions/ref/Microsoft.AspNetCore.Html.Abstractions.netcoreapp.cs b/src/Html/Abstractions/ref/Microsoft.AspNetCore.Html.Abstractions.netcoreapp.cs
index 206b2611d192..389c89c233ad 100644
--- a/src/Html/Abstractions/ref/Microsoft.AspNetCore.Html.Abstractions.netcoreapp.cs
+++ b/src/Html/Abstractions/ref/Microsoft.AspNetCore.Html.Abstractions.netcoreapp.cs
@@ -3,15 +3,16 @@
namespace Microsoft.AspNetCore.Html
{
+ [System.Diagnostics.DebuggerDisplayAttribute("{DebuggerToString()}")]
public partial class HtmlContentBuilder : Microsoft.AspNetCore.Html.IHtmlContent, Microsoft.AspNetCore.Html.IHtmlContentBuilder, Microsoft.AspNetCore.Html.IHtmlContentContainer
{
public HtmlContentBuilder() { }
public HtmlContentBuilder(System.Collections.Generic.IList