diff --git a/README.md b/README.md
index 1a6287f..8440623 100644
--- a/README.md
+++ b/README.md
@@ -34,14 +34,10 @@ To set up Plausible CE quickly, follow these steps:
     ```console
     $ touch .env
     
-    $ echo "HTTP_PORT=80" >> .env
-    $ echo "HTTPS_PORT=443" >> .env
     $ echo "BASE_URL=https://plausible.example.com" >> .env
     $ echo "SECRET_KEY_BASE=$(openssl rand -base64 48)" >> .env
     
     $ cat .env
-    HTTP_PORT=80
-    HTTPS_PORT=443
     BASE_URL=https://plausible.example.com
     SECRET_KEY_BASE=As0fZsJlUpuFYSthRjT5Yflg/NlxkFKPRro72xMLXF8yInZ60s6xGGXYVqml+XN1
     ```
diff --git a/compose.yml b/compose.yml
index 38634d6..eb4363d 100644
--- a/compose.yml
+++ b/compose.yml
@@ -38,17 +38,17 @@ services:
         condition: service_healthy
       plausible_events_db:
         condition: service_healthy
+    # Note that setting ports opens firewall for external access.
     ports:
-      # Note that setting ports opens firewall for external access.
-      - ${HTTP_PORT}:${HTTP_PORT}
-      - ${HTTPS_PORT}:${HTTPS_PORT}
+      - 80:80
+      - 443:443
     volumes:
       - plausible-data:/var/lib/plausible
     environment:
       - BASE_URL=${BASE_URL}
       - SECRET_KEY_BASE=${SECRET_KEY_BASE}
-      - HTTP_PORT
-      - HTTPS_PORT
+      - HTTP_PORT=80
+      - HTTPS_PORT=443
 
 volumes:
   db-data: