diff --git a/ast-generator/src/walk.rs b/ast-generator/src/walk.rs
index 496cebc..58394c0 100644
--- a/ast-generator/src/walk.rs
+++ b/ast-generator/src/walk.rs
@@ -55,6 +55,7 @@ pub fn make_walk_fn(specs: &[BuildSpec]) -> TokenStream {
                     #(#child_match_arms,)*
                 }
             }
+            f(node.as_node_ref());
         }
     }
 }