diff --git a/include/AutonomousSystem.h b/include/AutonomousSystem.h
index c51c0cedf9..9758178390 100644
--- a/include/AutonomousSystem.h
+++ b/include/AutonomousSystem.h
@@ -65,8 +65,14 @@ class AutonomousSystem : public GenericHashEntry, public GenericTrafficElement,
   bool idle();
   void lua(lua_State* vm, DetailsLevel details_level, bool asListElement);
 
-  inline void deserialize(json_object *obj)                           { GenericTrafficElement::deserialize(obj, iface); }
-  inline void serialize(json_object *obj, DetailsLevel details_level) { GenericTrafficElement::getJSONObject(obj, iface); }
+  inline void deserialize(json_object *obj) {
+    GenericHashEntry::deserialize(obj);
+    GenericTrafficElement::deserialize(obj, iface);
+  }
+  inline void serialize(json_object *obj, DetailsLevel details_level) {
+    GenericHashEntry::getJSONObject(obj, details_level);
+    GenericTrafficElement::getJSONObject(obj, iface);
+  }
   inline char* getSerializationKey(char *buf, uint bufsize) { snprintf(buf, bufsize, AS_SERIALIZED_KEY, iface->get_id(), asn); return(buf); }
 };
 
diff --git a/include/GenericHashEntry.h b/include/GenericHashEntry.h
index a9133a3bd6..06b0607835 100644
--- a/include/GenericHashEntry.h
+++ b/include/GenericHashEntry.h
@@ -101,6 +101,9 @@ class GenericHashEntry {
   void incUses()                       { num_uses++;      }
   void decUses()                       { num_uses--;      }
   u_int16_t getUses()                  { return num_uses; }
+
+  virtual void deserialize(json_object *obj);
+  virtual void getJSONObject(json_object *obj, DetailsLevel details_level);
 };
 
 #endif /* _GENERIC_HASH_ENTRY_H_ */
diff --git a/include/Vlan.h b/include/Vlan.h
index 11a870a798..241ac05f28 100644
--- a/include/Vlan.h
+++ b/include/Vlan.h
@@ -60,8 +60,14 @@ class Vlan : public GenericHashEntry, public GenericTrafficElement, public Seria
   bool idle();
   void lua(lua_State* vm, DetailsLevel details_level, bool asListElement);
 
-  inline void deserialize(json_object *obj)                           { GenericTrafficElement::deserialize(obj, iface); }
-  inline void serialize(json_object *obj, DetailsLevel details_level) { GenericTrafficElement::getJSONObject(obj, iface); }
+  inline void deserialize(json_object *obj) {
+    GenericHashEntry::deserialize(obj);
+    GenericTrafficElement::deserialize(obj, iface);
+  }
+  inline void serialize(json_object *obj, DetailsLevel details_level) {
+    GenericHashEntry::getJSONObject(obj, details_level);
+    GenericTrafficElement::getJSONObject(obj, iface);
+  }
   inline char* getSerializationKey(char *buf, uint bufsize) { snprintf(buf, bufsize, VLAN_SERIALIZED_KEY, iface->get_id(), vlan_id); return(buf); }
 };
 
diff --git a/src/Country.cpp b/src/Country.cpp
index 83805719ce..e32eb0e1fb 100644
--- a/src/Country.cpp
+++ b/src/Country.cpp
@@ -101,6 +101,7 @@ bool Country::equal(const char *country) {
 void Country::deserialize(json_object *o) {
   json_object *obj;
 
+  GenericHashEntry::deserialize(o);
   if(json_object_object_get_ex(o, "traffic", &obj))
     sent.deserialize(obj);
   if(json_object_object_get_ex(o, "dirstats", &obj))
@@ -111,6 +112,7 @@ void Country::deserialize(json_object *o) {
 
 void Country::serialize(json_object *o, DetailsLevel details_level) {
   json_object *obj;
+  GenericHashEntry::getJSONObject(o, details_level);
 
   if((obj = sent.getJSONObject()) != NULL)
     json_object_object_add(o, "traffic", obj);
diff --git a/src/GenericHashEntry.cpp b/src/GenericHashEntry.cpp
index 9c3c2e3d3e..c68d89f18c 100644
--- a/src/GenericHashEntry.cpp
+++ b/src/GenericHashEntry.cpp
@@ -67,3 +67,19 @@ bool GenericHashEntry::isIdle(u_int max_idleness) {
   return(will_be_purged 
 	 || (((u_int)(iface->getTimeLastPktRcvd()) > (last_seen+max_idleness)) ? true : false));
 }
+
+/* ***************************************** */
+
+void GenericHashEntry::deserialize(json_object *o) {
+  json_object *obj;
+
+  if(json_object_object_get_ex(o, "seen.first", &obj)) first_seen = json_object_get_int64(obj);
+  if(json_object_object_get_ex(o, "seen.last", &obj))  last_seen  = json_object_get_int64(obj);
+}
+
+/* ***************************************** */
+
+void GenericHashEntry::getJSONObject(json_object *my_object, DetailsLevel details_level) {
+  json_object_object_add(my_object, "seen.first", json_object_new_int64(first_seen));
+  json_object_object_add(my_object, "seen.last",  json_object_new_int64(last_seen));
+}
diff --git a/src/Host.cpp b/src/Host.cpp
index d9aff83e4f..32713d0145 100644
--- a/src/Host.cpp
+++ b/src/Host.cpp
@@ -815,8 +815,7 @@ void Host::serialize(json_object *my_object, DetailsLevel details_level) {
   json_object_object_add(my_object, "ifid", json_object_new_int(iface->get_id()));
 
   if(details_level >= details_high) {
-    json_object_object_add(my_object, "seen.first", json_object_new_int64(first_seen));
-    json_object_object_add(my_object, "seen.last",  json_object_new_int64(last_seen));
+    GenericHashEntry::getJSONObject(my_object, details_level);
     json_object_object_add(my_object, "last_stats_reset", json_object_new_int64(last_stats_reset));
     json_object_object_add(my_object, "asn", json_object_new_int(asn));
 
diff --git a/src/LocalHost.cpp b/src/LocalHost.cpp
index 2fc6ae6169..3948630303 100644
--- a/src/LocalHost.cpp
+++ b/src/LocalHost.cpp
@@ -149,8 +149,7 @@ void LocalHost::deserialize(json_object *o) {
       ntop->getTrace()->traceEvent(TRACE_WARNING, "Internal error: NULL mac. Are you running out of memory or MAC hash is full?");
   }
 
-  if(json_object_object_get_ex(o, "seen.first", &obj)) first_seen = json_object_get_int64(obj);
-  if(json_object_object_get_ex(o, "seen.last", &obj))  last_seen  = json_object_get_int64(obj);
+  GenericHashEntry::deserialize(o);
   if(json_object_object_get_ex(o, "last_stats_reset", &obj)) last_stats_reset = json_object_get_int64(obj);
   if(json_object_object_get_ex(o, "broadcastDomainHost", &obj) && json_object_get_boolean(obj))
     setBroadcastDomainHost();