diff --git a/xml/System.Xaml/XamlSchemaContext.xml b/xml/System.Xaml/XamlSchemaContext.xml
index 1dfaea04537..903c0ff6344 100644
--- a/xml/System.Xaml/XamlSchemaContext.xml
+++ b/xml/System.Xaml/XamlSchemaContext.xml
@@ -467,8 +467,8 @@
 
  ]]></format>
         </remarks>
-        <exception cref="T:System.ArgumentNullException">
-          <paramref name="type" /> is <see langword="null" />.</exception>
+        <exception cref="T:System.ArgumentNullException">.NET 5+ only: <paramref name="type" /> is <see langword="null" />.</exception>
+        <exception cref="T:System.NullReferenceException">.NET Framework only: <paramref name="type" /> is <see langword="null" />.</exception>
       </Docs>
     </Member>
     <Member MemberName="GetXamlType">