diff --git a/ast-generator/src/ast_node/enum_ast_node.rs b/ast-generator/src/ast_node/enum_ast_node.rs
index 43a12fd..7bf3ca7 100644
--- a/ast-generator/src/ast_node/enum_ast_node.rs
+++ b/ast-generator/src/ast_node/enum_ast_node.rs
@@ -21,7 +21,7 @@ pub fn make_enum_ast_node_impl(enum_spec: &TreeEnumBuildSpec) -> TokenStream {
                             }
                         }
                         _ => quote! {
-                            #type_ident::#rule_ident => vec![]
+                            #type_ident::#rule_ident(_) => vec![]
                         }
                     }
                 },