diff --git a/ESPtermostat.ino b/ESPtermostat.ino
index b7136d3..826eb3e 100644
--- a/ESPtermostat.ino
+++ b/ESPtermostat.ino
@@ -176,7 +176,7 @@ void thermostatCheck() {
 }
 
 void readSensors() {
-  uint8_t ds18Count = sensor.getDeviceCount();
+  uint8_t ds18Count = sensor.getDS18Count();
   float tempC[ds18Count];
   float temperature[ds18Count];
   DeviceAddress addr;