diff --git a/homeassistant/components/lawn_mower/__init__.py b/homeassistant/components/lawn_mower/__init__.py
index 0680bfc9d71..f8c3e0cd67d 100644
--- a/homeassistant/components/lawn_mower/__init__.py
+++ b/homeassistant/components/lawn_mower/__init__.py
@@ -28,6 +28,7 @@ from .const import (
 _LOGGER = logging.getLogger(__name__)
 
 DATA_COMPONENT: HassKey[EntityComponent[LawnMowerEntity]] = HassKey(DOMAIN)
+ENTITY_ID_FORMAT = DOMAIN + ".{}"
 PLATFORM_SCHEMA = cv.PLATFORM_SCHEMA
 PLATFORM_SCHEMA_BASE = cv.PLATFORM_SCHEMA_BASE
 SCAN_INTERVAL = timedelta(seconds=60)
diff --git a/homeassistant/components/mqtt/lawn_mower.py b/homeassistant/components/mqtt/lawn_mower.py
index 7727efcf04d..1917c56f209 100644
--- a/homeassistant/components/mqtt/lawn_mower.py
+++ b/homeassistant/components/mqtt/lawn_mower.py
@@ -10,6 +10,7 @@ import voluptuous as vol
 
 from homeassistant.components import lawn_mower
 from homeassistant.components.lawn_mower import (
+    ENTITY_ID_FORMAT,
     LawnMowerActivity,
     LawnMowerEntity,
     LawnMowerEntityFeature,
@@ -50,7 +51,6 @@ CONF_START_MOWING_COMMAND_TOPIC = "start_mowing_command_topic"
 CONF_START_MOWING_COMMAND_TEMPLATE = "start_mowing_command_template"
 
 DEFAULT_NAME = "MQTT Lawn Mower"
-ENTITY_ID_FORMAT = lawn_mower.DOMAIN + ".{}"
 
 MQTT_LAWN_MOWER_ATTRIBUTES_BLOCKED: frozenset[str] = frozenset()