diff --git a/source/_integrations/image.mqtt.markdown b/source/_integrations/image.mqtt.markdown
index 16a35e72a8a..51ef0266348 100644
--- a/source/_integrations/image.mqtt.markdown
+++ b/source/_integrations/image.mqtt.markdown
@@ -177,8 +177,7 @@ url_template:
 url_topic:
   description: The MQTT topic to subscribe to receive an image URL. A `url_template` option can extract the URL from the message. The `content_type` will be derived from the image when downloaded. This option cannot be used together with the `image_topic` option, but at least one of these options is required.
   required: exclusive
-  type: boolean
-  default: false
+  type: string
 {% endconfiguration %}
 
 ### Example receiving images from from a URL