diff --git a/tests/test_climate.py b/tests/test_climate.py
index a0fa97b8..369dd8aa 100644
--- a/tests/test_climate.py
+++ b/tests/test_climate.py
@@ -5,7 +5,7 @@
 import asyncio
 from collections.abc import Awaitable, Callable
 import logging
-from unittest.mock import AsyncMock, call, patch
+from unittest.mock import AsyncMock, MagicMock, call, patch
 
 import pytest
 import zhaquirks.sinope.thermostat
@@ -39,6 +39,7 @@
     SinopeHVACAction,
     ThermostatHVACAction,
 )
+from zha.const import STATE_CHANGED
 from zha.exceptions import ZHAException
 from zha.zigbee.device import Device
 
@@ -313,6 +314,10 @@ async def test_climate_hvac_action_running_state(
         device_climate_sinope, platform=Platform.SENSOR, entity_type=SinopeHVACAction
     )
 
+    subscriber = MagicMock()
+    entity.on_event(STATE_CHANGED, subscriber)
+    sensor_entity.on_event(STATE_CHANGED, subscriber)
+
     assert entity.state["hvac_action"] == "off"
     assert sensor_entity.state["state"] == "off"
 
@@ -352,6 +357,9 @@ async def test_climate_hvac_action_running_state(
     assert entity.state["hvac_action"] == "fan"
     assert sensor_entity.state["state"] == "fan"
 
+    # Both entities are updated!
+    assert len(subscriber.mock_calls) == 2 * 6
+
 
 @pytest.mark.looptime
 async def test_sinope_time(
diff --git a/zha/application/platforms/sensor/__init__.py b/zha/application/platforms/sensor/__init__.py
index 4e708278..5956cb39 100644
--- a/zha/application/platforms/sensor/__init__.py
+++ b/zha/application/platforms/sensor/__init__.py
@@ -253,10 +253,14 @@ def handle_cluster_handler_attribute_updated(
         event: ClusterAttributeUpdatedEvent,  # pylint: disable=unused-argument
     ) -> None:
         """Handle attribute updates from the cluster handler."""
-        if event.attribute_name == self._attribute_name or (
-            hasattr(self, "_attr_extra_state_attribute_names")
-            and event.attribute_name
-            in getattr(self, "_attr_extra_state_attribute_names")
+        if (
+            event.attribute_name == self._attribute_name
+            or (
+                hasattr(self, "_attr_extra_state_attribute_names")
+                and event.attribute_name
+                in getattr(self, "_attr_extra_state_attribute_names")
+            )
+            or self._attribute_name is None
         ):
             self.maybe_emit_state_changed_event()