diff --git a/docs/standard/native-interop/type-marshalling.md b/docs/standard/native-interop/type-marshalling.md
index f05e60ffac31c..963ba826b44de 100644
--- a/docs/standard/native-interop/type-marshalling.md
+++ b/docs/standard/native-interop/type-marshalling.md
@@ -12,7 +12,7 @@ Marshalling is needed because the types in the managed and unmanaged code are di
 
 ```csharp
 [LibraryImport("somenativelibrary.dll")]
-static extern int MethodA([MarshalAs(UnmanagedType.LPStr)] string parameter);
+static extern int MethodA([MarshalAs(UnmanagedType.LPUTF8Str)] string parameter);
 
 // or