diff --git a/apps/ndn-producer.h b/apps/ndn-producer.h
index dc50ea7..dcc9581 100644
--- a/apps/ndn-producer.h
+++ b/apps/ndn-producer.h
@@ -61,6 +61,7 @@
 private:
   NameComponents m_prefix;
   uint32_t m_virtualPayloadSize;
+  Time m_freshness;
 };
 
 } // namespace ndn