diff --git a/soft/thermostat/src/mainwindow.cpp b/soft/thermostat/src/mainwindow.cpp
index 8eaabad..1c8bc9d 100644
--- a/soft/thermostat/src/mainwindow.cpp
+++ b/soft/thermostat/src/mainwindow.cpp
@@ -328,7 +328,7 @@ bool MainWindow::get_heater_order(int room_idx)
 
 	/* TODO: make it smarter */
 	if (qFabs(get_target_temperature(room_idx)
-		  - m_zones.at(room_idx)->m_temperature_value) < 0.3) {
+		  - m_zones.at(room_idx)->m_temperature_value) < 0.1) {
 		/*
 		 * Stay like before
 		 */