diff --git a/homeassistant/components/mqtt/strings.json b/homeassistant/components/mqtt/strings.json
index 9c7a2fcea96..592ea8686e1 100644
--- a/homeassistant/components/mqtt/strings.json
+++ b/homeassistant/components/mqtt/strings.json
@@ -222,8 +222,8 @@
             "unit_of_measurement": "Unit of measurement"
           },
           "data_description": {
-            "device_class": "The Device class of the {platform} entity. [Learn more.]({url}#device_class)",
-            "entity_category": "Allow marking an entity as device configuration or diagnostics. An entity with a category will not be exposed to cloud, Alexa, or Google Assistant components, nor included in indirect action calls to devices or areas. Sensor entities cannot be assigned a device configiuration class. [Learn more.](https://developers.home-assistant.io/docs/core/entity/#registry-properties)",
+            "device_class": "The device class of the {platform} entity. [Learn more.]({url}#device_class)",
+            "entity_category": "Allows marking an entity as device configuration or diagnostics. An entity with a category will not be exposed to cloud, Alexa, or Google Assistant components, nor included in indirect action calls to devices or areas. Sensor entities cannot be assigned a device configuration class. [Learn more.](https://developers.home-assistant.io/docs/core/entity/#registry-properties)",
             "fan_feature_speed": "The fan supports multiple speeds.",
             "fan_feature_preset_modes": "The fan supports preset modes.",
             "fan_feature_oscillation": "The fan supports oscillation.",