diff --git a/source/_integrations/google_assistant.markdown b/source/_integrations/google_assistant.markdown
index 153fe526609..3c8ca579c4e 100644
--- a/source/_integrations/google_assistant.markdown
+++ b/source/_integrations/google_assistant.markdown
@@ -109,6 +109,14 @@ If you want to support active reporting of state to Google's server (configurati
### Enable Local Fulfillment
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+The [`ssl_certificate` option](/integrations/http/#ssl_certificate) in the `http` integration must not have a value or this feature won't work.
+
+This is because Google requires a valid certificate and the way it connects to Home Assistant for local fulfillment makes that impossible. Consider using a reverse proxy such as the {% my supervisor_addon addon="core_nginx_proxy" title="NGINX SSL" %} add-on instead of directing external traffic directly to Home Assistant.
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1. Open the project you created in the [Actions on Google console](https://console.actions.google.com/).
2. Click `Develop` on the top of the page, then click `Actions` located in the hamburger menu on the top left.
3. Upload [this Javascript file](/assets/integrations/google_assistant/app.js) for both Node and Chrome by clicking the `Upload Javascript files` button.