diff --git a/homeassistant/components/mqtt/strings.json b/homeassistant/components/mqtt/strings.json
index 8cb66270331..ba869a7334b 100644
--- a/homeassistant/components/mqtt/strings.json
+++ b/homeassistant/components/mqtt/strings.json
@@ -422,7 +422,7 @@
                 "tilt_opened_value": "The value that will be sent to the \"tilt command topic\" when the cover tilt is opened.",
                 "tilt_status_template": "Defines a [template](https://www.home-assistant.io/docs/configuration/templating/#using-value-templates-with-mqtt) to extract the payload for the tilt status topic. Within the template the following variables are available: `entity_id`, `position_open`, `position_closed`, `tilt_min` and `tilt_max`. [Learn more.]({url}#tilt_status_template)",
                 "tilt_status_topic": "The MQTT topic subscribed to receive tilt status update values. [Learn more.]({url}#tilt_status_topic)",
-                "tilt_optimistic": "Flag that defines if tilt works in optimistic mode. If tilt status topic is not defined, tilt works in optimisic mode by default. [Learn more.]({url}#tilt_optimistic)"
+                "tilt_optimistic": "Flag that defines if tilt works in optimistic mode. If tilt status topic is not defined, tilt works in optimistic mode by default. [Learn more.]({url}#tilt_optimistic)"
               }
             },
             "light_brightness_settings": {