diff --git a/source/_integrations/filesize.markdown b/source/_integrations/filesize.markdown
index b1724722927..367d6bbc022 100644
--- a/source/_integrations/filesize.markdown
+++ b/source/_integrations/filesize.markdown
@@ -21,6 +21,20 @@ The **File size** {% term integration %} is for displaying the size in MB of a f
 
 File paths must also be added to [allowlist_external_dirs](/integrations/homeassistant/#allowlist_external_dirs) in your `configuration.yaml`.
 
+Example `allowlist_external_dirs` configuration to monitor a file in your configuration folder.
+
+{% raw %}
+
+```yaml
+
+homeassistant:
+  allowlist_external_dirs:
+    - "/config" # Default configuration directory
+
+```
+
+{% endraw %}
+
 File paths should be absolute paths. For example: `/config/home-assistant_v2.db` to monitor the size of the default database.
 
 {% endimportant %}