diff --git a/geth-eventql/src/parser/ast.rs b/geth-eventql/src/parser/ast.rs
index 9433a15..ec7e2ad 100644
--- a/geth-eventql/src/parser/ast.rs
+++ b/geth-eventql/src/parser/ast.rs
@@ -664,8 +664,9 @@ pub enum Order {
     Desc,
 }
 
-#[derive(PartialEq, Eq, Copy, Clone)]
+#[derive(PartialEq, Eq, Copy, Clone, Default)]
 pub enum ContextFrame {
+    #[default]
     Unspecified,
     Where,
     GroupBy,
@@ -673,12 +674,6 @@ pub enum ContextFrame {
     Projection,
 }
 
-impl Default for ContextFrame {
-    fn default() -> Self {
-        Self::Unspecified
-    }
-}
-
 #[allow(unused_variables)]
 pub trait QueryVisitorMut {
     type Inner<'a>: ExprVisitorMut