diff --git a/consumer/speed_controller.go b/consumer/speed_controller.go
index 6ac46cb..ed3469a 100644
--- a/consumer/speed_controller.go
+++ b/consumer/speed_controller.go
@@ -55,6 +55,7 @@ func (c *fanControl) StartControl() {
 		case <-ticker:
 			go c.applyFanspeed(pastFanSpeedList, newFanSpeedList)
 			pastFanSpeedList, newFanSpeedList = newFanSpeedList, make([]int, c.processorCount)
+			copy(newFanSpeedList, pastFanSpeedList)
 		case changedSpeed := <-c.fanSpeedConsumer:
 			newFanSpeedList[changedSpeed.Id] = changedSpeed.FanSpeed
 		case <-c.handler.Done():