diff --git a/prototype/Doubt/Cofree.swift b/prototype/Doubt/Cofree.swift
index 35837c0ce..e9fc3c44d 100644
--- a/prototype/Doubt/Cofree.swift
+++ b/prototype/Doubt/Cofree.swift
@@ -112,7 +112,7 @@ extension Cofree where B: Categorizable {
 }
 
 
-// MARK: - CofreeConvertible
+// MARK: - CofreeType
 
 public protocol CofreeType {
 	typealias Annotation