diff --git a/homeassistant/components/luftdaten/strings.json b/homeassistant/components/luftdaten/strings.json
index ea842f18ebd..072252cdf21 100644
--- a/homeassistant/components/luftdaten/strings.json
+++ b/homeassistant/components/luftdaten/strings.json
@@ -19,7 +19,7 @@
   },
   "entity": {
     "sensor": {
-      "pressure_at_sealevel": { "name": "Pressure at sealevel" }
+      "pressure_at_sealevel": { "name": "Pressure at sea level" }
     }
   }
 }
diff --git a/tests/components/luftdaten/test_sensor.py b/tests/components/luftdaten/test_sensor.py
index f2cf12b3fda..bbabc486355 100644
--- a/tests/components/luftdaten/test_sensor.py
+++ b/tests/components/luftdaten/test_sensor.py
@@ -72,16 +72,16 @@ async def test_luftdaten_sensors(
     assert state.attributes.get(ATTR_UNIT_OF_MEASUREMENT) == UnitOfPressure.PA
     assert ATTR_ICON not in state.attributes
 
-    entry = entity_registry.async_get("sensor.sensor_12345_pressure_at_sealevel")
+    entry = entity_registry.async_get("sensor.sensor_12345_pressure_at_sea_level")
     assert entry
     assert entry.device_id
     assert entry.unique_id == "12345_pressure_at_sealevel"
 
-    state = hass.states.get("sensor.sensor_12345_pressure_at_sealevel")
+    state = hass.states.get("sensor.sensor_12345_pressure_at_sea_level")
     assert state
     assert state.state == "103102.13"
     assert (
-        state.attributes.get(ATTR_FRIENDLY_NAME) == "Sensor 12345 Pressure at sealevel"
+        state.attributes.get(ATTR_FRIENDLY_NAME) == "Sensor 12345 Pressure at sea level"
     )
     assert state.attributes.get(ATTR_DEVICE_CLASS) == SensorDeviceClass.PRESSURE
     assert state.attributes.get(ATTR_STATE_CLASS) is SensorStateClass.MEASUREMENT