diff --git a/aspnetcore/migration/31-to-50.md b/aspnetcore/migration/31-to-50.md
index 6f17367c08..1f40678574 100644
--- a/aspnetcore/migration/31-to-50.md
+++ b/aspnetcore/migration/31-to-50.md
@@ -622,6 +622,14 @@ Add the following item to the PWA app's project file:
 </ItemGroup>
 ```
 
+## Remove preview CSS isolation stylesheet link
+
+If the project's `wwwroot/index.html` (Blazor WebAssembly) or `Pages/_Host.cshtml` (Blazor Server) contains a stylesheet `<link>` element for `scoped.styles.css` from an earlier 5.0 preview release, remove the `<link>` tag:
+
+```diff
+-<link href="_framework/scoped.styles.css/" rel="stylesheet" />
+```
+
 ## Update Razor class libraries (RCLs)
 
 Migrate Razor class libraries (RCLs) to take advantage of new APIs or features that are introduced as part of ASP.NET Core 5.0.