diff --git a/src/pump_bot.py b/src/pump_bot.py
index 0e2b71d..ea39351 100755
--- a/src/pump_bot.py
+++ b/src/pump_bot.py
@@ -181,11 +181,14 @@ def _get_timestamp_as_string(timestamp: int) -> str:
 
 @bot.handler(message='watering_status')
 def watering_status(ctx: bot.Context) -> None:
-    buf = f'last report time: <b>{_get_timestamp_as_string(watering_mcu_status["last_time"])}</b>\n'
+    buf = ''
+    if 0 < watering_mcu_status["last_time"] < time()-1800:
+        buf += '<b>WARNING! long time no reports from mcu! maybe something\'s wrong</b>\n'
+    buf += f'last report time: <b>{_get_timestamp_as_string(watering_mcu_status["last_time"])}</b>\n'
     if watering_mcu_status["last_boot_time"] != 0:
         buf += f'boot time: <b>{_get_timestamp_as_string(watering_mcu_status["last_boot_time"])}</b>\n'
     buf += 'relay opened: <b>' + ('yes' if watering_mcu_status['relay_opened'] else 'no') + '</b>\n'
-    buf += f'ambient temp & humidity: <b>{watering_mcu_status["ambient_temp"]} C, {watering_mcu_status["ambient_rh"]}%</b>'
+    buf += f'ambient temp & humidity: <b>{watering_mcu_status["ambient_temp"]} °C, {watering_mcu_status["ambient_rh"]}%</b>'
     ctx.reply(buf)