diff --git a/docs/native.wasm b/docs/native.wasm
index f6e5415..9a84dba 100644
Binary files a/docs/native.wasm and b/docs/native.wasm differ
diff --git a/peglib.h b/peglib.h
index 675c7bd..3ba3706 100644
--- a/peglib.h
+++ b/peglib.h
@@ -2822,6 +2822,9 @@ inline void ReferenceChecker::visit(Reference &ope) {
       error_s[ope.name_] = ope.s_;
       error_message[ope.name_] = "'" + ope.name_ + "' is not macro.";
     }
+    for (auto arg : ope.args_) {
+      arg->accept(*this);
+    }
   }
 }