diff --git a/contour.py b/contour.py
index 7f2fe95..355d05a 100644
--- a/contour.py
+++ b/contour.py
@@ -30,6 +30,7 @@ class Contour:
 			return
 		if (self.state is None) or (time.time() - self.state_change_time > self.CHANGE_FREQ) or force:
 			self.state = state_value
+			self.state_change_time = time.time()
 			self.logger.info("Contour " + self.sensor_topic + " changed state to " + str(self.state))
 	
 	def update_target(self, target_value):