diff --git a/OAuth-2.0-Migration-Guide.asciidoc b/OAuth-2.0-Migration-Guide.asciidoc
index 729f718..7875321 100644
--- a/OAuth-2.0-Migration-Guide.asciidoc
+++ b/OAuth-2.0-Migration-Guide.asciidoc
@@ -1,6 +1,6 @@
 NOTE: This document is a work in progress. Check back regularly for updates.
 
-This document contains guidance for moving from Spring Security OAuth 2.x to Spring Security 5.2.x.
+This document contains guidance for moving OAuth 2.0 Clients and Resource Servers from Spring Security OAuth 2.x to Spring Security 5.2.x. Since Spring Security doesn't provide Authorization Server support, migrating a Spring Security OAuth Authorization Server is out of scope for this document.
 
 Because the two approaches are as different as they are, this document will tend to cover patterns more than precise search-and-replace steps.