diff --git a/API.md b/API.md
index c91be5156..47d125c53 100644
--- a/API.md
+++ b/API.md
@@ -23,6 +23,7 @@
 }
 ```
 * After the pull request is merged, you will see a 404 error on `your-domain.is-a.dev`. To fix this go to your github page repo's `Settings > Github pages > Custom domain` and add `your-domain.is-a.dev` in the given field
+* If you have added the `URL` record for forced https, check the `Enforce HTTPS` checkbox too