diff --git a/homeassistant/helpers/entity.py b/homeassistant/helpers/entity.py
index d4f8128f643..255b0c2d834 100644
--- a/homeassistant/helpers/entity.py
+++ b/homeassistant/helpers/entity.py
@@ -144,7 +144,7 @@ def get_supported_features(hass: HomeAssistant, entity_id: str) -> int:
 
 
 def get_unit_of_measurement(hass: HomeAssistant, entity_id: str) -> str | None:
-    """Get unit of measurement class of an entity.
+    """Get unit of measurement of an entity.
 
     First try the statemachine, then entity registry.
     """