diff --git a/src/client-config.hpp b/src/client-config.hpp
index 80d5241..2d74cf6 100644
--- a/src/client-config.hpp
+++ b/src/client-config.hpp
@@ -53,6 +53,11 @@
    * CA's certificate.
    */
   security::v2::Certificate m_anchor;
+  /**
+   * Maximum allowed suffix length of requested name.
+   * E.g., When its value is 2, at most 2 name components can be assigned after m_caPrefix.
+   */
+  size_t m_maxSuffixLength;
 
   //=======old