diff --git a/schala-lang/language/src/ast/visitor.rs b/schala-lang/language/src/ast/visitor.rs
index 6a0c19c..0d10ccc 100644
--- a/schala-lang/language/src/ast/visitor.rs
+++ b/schala-lang/language/src/ast/visitor.rs
@@ -46,7 +46,7 @@ pub enum VisitorOutput<T, E> {
   Err(E)
 }
 
-pub trait ExpressionVisitor {//TODO maybe this should be an associated type?
+pub trait ExpressionVisitor {
   type Output;
   fn type_anno(&mut self, _anno: &TypeIdentifier) -> Self::Output;
   fn nat_literal(&mut self, _value: &u64) -> Self::Output;