diff --git a/web/docs/advanced/deployment/manually.md b/web/docs/advanced/deployment/manually.md
index 2b6be86c4..4be23142d 100644
--- a/web/docs/advanced/deployment/manually.md
+++ b/web/docs/advanced/deployment/manually.md
@@ -330,8 +330,8 @@ Let's deploy our server first:
    Open the `Settings` and go to the `Variables` tab:
 
    - click **Variable reference** and select `DATABASE_URL` (it will populate it with the correct value)
-   - add `WASP_WEB_CLIENT_URL` - enter the `client` domain (e.g. `https://client-production-XXXX.up.railway.app`)
-   - add `WASP_SERVER_URL` - enter the `server` domain (e.g. `https://server-production-XXXX.up.railway.app`)
+   - add `WASP_WEB_CLIENT_URL` - enter the `client` domain (e.g. `https://client-production-XXXX.up.railway.app`). `https://` prefix is required!
+   - add `WASP_SERVER_URL` - enter the `server` domain (e.g. `https://server-production-XXXX.up.railway.app`). `https://` prefix is required!
    - add `JWT_SECRET` - enter a random string at least 32 characters long (use an [online generator](https://djecrety.ir/))
 
      <AddExternalAuthEnvVarsReminder />