diff --git a/id-match-spec.adoc b/id-match-spec.adoc
index c655b08..3f04b78 100644
--- a/id-match-spec.adoc
+++ b/id-match-spec.adoc
@@ -1,6 +1,9 @@
 = ID Match API
 
-= About ID Match
+toc::[]
+:toclevel: 5
+
+== About ID Match
 
 ID Match refers to the task of determining if a person presented by a system of record is already known to the Identity Management System.