diff --git a/homeassistant/components/sensor/__init__.py b/homeassistant/components/sensor/__init__.py
index 2477e849666..e8303c12c10 100644
--- a/homeassistant/components/sensor/__init__.py
+++ b/homeassistant/components/sensor/__init__.py
@@ -453,7 +453,7 @@ class SensorEntity(Entity):
             return self._sensor_option_unit_of_measurement
 
         # Second priority, for non registered entities: unit suggested by integration
-        if not self.unique_id and (
+        if not self.registry_entry and (
             suggested_unit_of_measurement := self.suggested_unit_of_measurement
         ):
             return suggested_unit_of_measurement