diff --git a/spec/Section 2 -- Source Schema.md b/spec/Section 2 -- Source Schema.md
index c9e2d54..eaa5828 100644
--- a/spec/Section 2 -- Source Schema.md	
+++ b/spec/Section 2 -- Source Schema.md	
@@ -1,6 +1,6 @@
 # Source Schema
 
-The GraphQL _source schema_ is a GraphQL schema that is part of a larger
+A _source schema_ is a GraphQL schema that is part of a larger
 _composite schema_. Source schemas use directives to express intent and
 requirements for the composition process. In the following chapters, we will
 describe the directives that are used to annotate a source schema.
diff --git a/spec/Spec.md b/spec/Spec.md
index 112d195..a76185f 100644
--- a/spec/Spec.md
+++ b/spec/Spec.md
@@ -85,8 +85,6 @@ Note: This is an example of a non-normative note.
 
 # [Subgraph](Section%202%20--%20Source%20Schema.md)
 
-# [Supergraph](Section%203%20--%20Supergraph.md)
-
 # [Composition](Section%204%20--%20Composition.md)
 
 # [Execution](Section%205%20--%20Execution.md)