diff --git a/homeassistant/components/radarr/strings.json b/homeassistant/components/radarr/strings.json
index cb624aff057..268d7955c1b 100644
--- a/homeassistant/components/radarr/strings.json
+++ b/homeassistant/components/radarr/strings.json
@@ -44,11 +44,11 @@
     "sensor": {
       "movies": {
         "name": "Movies",
-        "unit_of_measurement": "[%key:component::radarr::entity::sensor::movies::name%]"
+        "unit_of_measurement": "movies"
       },
       "queue": {
         "name": "Queue",
-        "unit_of_measurement": "[%key:component::radarr::entity::sensor::movies::name%]"
+        "unit_of_measurement": "[%key:component::radarr::entity::sensor::movies::unit_of_measurement%]"
       },
       "start_time": {
         "name": "Start time"
diff --git a/tests/components/radarr/test_sensor.py b/tests/components/radarr/test_sensor.py
index 9139e13a957..f6b14bffa80 100644
--- a/tests/components/radarr/test_sensor.py
+++ b/tests/components/radarr/test_sensor.py
@@ -68,13 +68,13 @@ async def test_sensors(
     assert state.attributes.get(ATTR_UNIT_OF_MEASUREMENT) == "GB"
     state = hass.states.get("sensor.mock_title_movies")
     assert state.state == "1"
-    assert state.attributes.get(ATTR_UNIT_OF_MEASUREMENT) == "Movies"
+    assert state.attributes.get(ATTR_UNIT_OF_MEASUREMENT) == "movies"
     state = hass.states.get("sensor.mock_title_start_time")
     assert state.state == "2020-09-01T23:50:20+00:00"
     assert state.attributes.get(ATTR_DEVICE_CLASS) == SensorDeviceClass.TIMESTAMP
     state = hass.states.get("sensor.mock_title_queue")
     assert state.state == "2"
-    assert state.attributes.get(ATTR_UNIT_OF_MEASUREMENT) == "Movies"
+    assert state.attributes.get(ATTR_UNIT_OF_MEASUREMENT) == "movies"
     assert state.attributes.get(ATTR_STATE_CLASS) is SensorStateClass.TOTAL