From 5739712a0d96f219d79627a612d6a1a902c494d5 Mon Sep 17 00:00:00 2001
From: epenet <6771947+epenet@users.noreply.github.com>
Date: Mon, 5 Sep 2022 10:47:01 +0200
Subject: [PATCH] Adjust type hint in meteoalarm (#77818)

---
 homeassistant/components/meteoalarm/binary_sensor.py | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/homeassistant/components/meteoalarm/binary_sensor.py b/homeassistant/components/meteoalarm/binary_sensor.py
index c4b6e49a636..246074ce585 100644
--- a/homeassistant/components/meteoalarm/binary_sensor.py
+++ b/homeassistant/components/meteoalarm/binary_sensor.py
@@ -74,15 +74,14 @@ class MeteoAlertBinarySensor(BinarySensorEntity):
         self._attr_name = name
         self._api = api
 
-    def update(self):
+    def update(self) -> None:
         """Update device state."""
-        self._attr_extra_state_attributes = None
+        self._attr_extra_state_attributes = {}
         self._attr_is_on = False
 
         if alert := self._api.get_alert():
             expiration_date = dt_util.parse_datetime(alert["expires"])
-            now = dt_util.utcnow()
 
-            if expiration_date > now:
+            if expiration_date is not None and expiration_date > dt_util.utcnow():
                 self._attr_extra_state_attributes = alert
                 self._attr_is_on = True