diff --git a/aspnetcore/mvc/views/tag-helpers/built-in/partial-tag-helper.md b/aspnetcore/mvc/views/tag-helpers/built-in/partial-tag-helper.md
index db5ba282c7..fc1240f611 100644
--- a/aspnetcore/mvc/views/tag-helpers/built-in/partial-tag-helper.md
+++ b/aspnetcore/mvc/views/tag-helpers/built-in/partial-tag-helper.md
@@ -56,7 +56,7 @@ The following markup loads *_ProductPartial.cshtml*:
 
 The partial view is bound to the associated page model's `Product` property:
 
-[!code-cshtml[](samples/TagHelpersBuiltIn/Pages/Product.cshtml.cs?highlight=8)]
+[!code-csharp[](samples/TagHelpersBuiltIn/Pages/Product.cshtml.cs?highlight=8)]
 
 ## view-data