diff --git a/code/remote.py b/code/remote.py
index 02950bc..e1c865c 100644
--- a/code/remote.py
+++ b/code/remote.py
@@ -47,8 +47,7 @@ class Controller(Singleton):
             if flag is True:
                 self.tracker.machine_info_report()
             elif flag is False:
-                self.tracker.machine_info_report(power_switch=flag)
-                utime.sleep(3)
+                self.tracker.machine_info_report(power_switch=flag, block_io=True)
                 self.tracker.energy_led.period = None
                 self.tracker.energy_led.switch(0)
                 self.tracker.running_led.period = None
diff --git a/code/timer.py b/code/timer.py
index fd3c807..d8f1805 100644
--- a/code/timer.py
+++ b/code/timer.py
@@ -58,7 +58,7 @@ class TrackerTimer(Singleton):
                     self.tracker.alert.post_alert(30002, {'local_time': utime.mktime(utime.localtime())})
                     self.tracker.machine_info_report()
             if energy <= current_settings['app']['low_power_shutdown_threshold']:
-                self.tracker.machine_info_report(power_switch=False)
+                self.tracker.machine_info_report(power_switch=False, block_io=True)
                 self.tracker.energy_led.period = None
                 self.tracker.energy_led.switch(0)
                 self.tracker.running_led.period = None