diff --git a/ESPinfluxdb.cpp b/ESPinfluxdb.cpp
index e781ae3..d51284e 100644
--- a/ESPinfluxdb.cpp
+++ b/ESPinfluxdb.cpp
@@ -11,11 +11,26 @@
 #define _DEBUG
 #endif
 
+Influxdb::Influxdb()
+{
+        // empty constructor so that host and port can be initialized later
+}
+
 Influxdb::Influxdb(const char *host, uint16_t port) {
         _port = String(port);
         _host = String(host);
 }
 
+void Influxdb::setHost(const char *host)
+{
+        _host = String(host);
+}
+
+void Influxdb::setPort(uint16_t port)
+{
+        _port = String(port);
+}
+
 DB_RESPONSE Influxdb::opendb(String db, String user, String password) {
         _db = db + "&u=" + user + "&p=" + password;
 }
diff --git a/ESPinfluxdb.h b/ESPinfluxdb.h
index cd056e7..dd4040f 100644
--- a/ESPinfluxdb.h
+++ b/ESPinfluxdb.h
@@ -40,8 +40,12 @@ String _tag;
 class Influxdb
 {
 public:
+Influxdb();
 Influxdb(const char* host, uint16_t port);
 
+void setHost(const char* host);
+void setPort(uint16_t port);
+
 DB_RESPONSE opendb(String db);
 DB_RESPONSE opendb(String db, String user, String password);
 DB_RESPONSE write(dbMeasurement data);