diff --git a/src/ndns-label.hpp b/src/ndns-label.hpp
index 066ee94..8ce7d34 100644
--- a/src/ndns-label.hpp
+++ b/src/ndns-label.hpp
@@ -60,11 +60,16 @@
 const name::Component NS_RR_TYPE("NS");
 
 /**
- * @brief CERT resource record type
+ * @brief ndns related certificate resource record type
  */
 const name::Component CERT_RR_TYPE("CERT");
 
 /**
+ * @brief application stored certificate resource record type
+ */
+const name::Component APPCERT_RR_TYPE("APPCERT");
+
+/**
  * @brief TXT resource record type
  */
 const name::Component TXT_RR_TYPE("TXT");