diff --git a/src/connectivity/ntp_client_plus.cpp b/src/connectivity/ntp_client_plus.cpp
index a0632ae..f3ae6b9 100644
--- a/src/connectivity/ntp_client_plus.cpp
+++ b/src/connectivity/ntp_client_plus.cpp
@@ -302,7 +302,7 @@ void NTPClientPlus::calc_date()
 
     // calc if summer time active
 
-    this->update_sw_change();
+    this->check_daylight_saving_time();
 }
 
 /**
@@ -555,7 +555,7 @@ void NTPClientPlus::set_summertime(bool summertime)
  *
  * @returns bool summertime active
  */
-bool NTPClientPlus::update_sw_change()
+bool NTPClientPlus::check_daylight_saving_time()
 {
     unsigned int day_of_week = this->_day_of_week;
     unsigned int date_day = this->_date_day;