diff --git a/README.md b/README.md
index ab0ac4d..047eddb 100644
--- a/README.md
+++ b/README.md
@@ -62,6 +62,7 @@ of learning how to write a programming language.
 ### General
 
 http://thume.ca/2019/04/18/writing-a-compiler-in-rust/
+http://thume.ca/2019/07/14/a-tour-of-metaprogramming-models-for-generics/
 
 ### Type-checking
 https://skillsmatter.com/skillscasts/10868-inside-the-rust-compiler
diff --git a/schala-lang/language/src/visitor.rs b/schala-lang/language/src/visitor.rs
index 1637cce..4b30da1 100644
--- a/schala-lang/language/src/visitor.rs
+++ b/schala-lang/language/src/visitor.rs
@@ -1,4 +1,4 @@
 
-pub trait Visitor {
+pub trait ASTVisitor {
 
 }