diff --git a/readme.md b/readme.md
index 2d9ed69..03ac198 100644
--- a/readme.md
+++ b/readme.md
@@ -25,9 +25,9 @@ psql postgres
 > \c chess
 > GRANT ALL ON SCHEMA public TO chess;
 cat > .env
-POSTGRES_DATABASE=chess
-POSTGRES_USERNAME=chess
-POSTGRES_PASSWORD=RANDOM_PASSWORD
+PGDATABASE=chess
+PGUSERNAME=chess
+PGPASSWORD=RANDOM_PASSWORD
 ```
 
 ## The server itself