diff --git a/README.md b/README.md
index bcb4884..1ce9320 100644
--- a/README.md
+++ b/README.md
@@ -31,8 +31,8 @@ Then, start the prometheus-postgreSQL storage adapter using:
 ```
  docker run --name prometheus_postgresql_adapter --link pg_prometheus -d -p 9201:9201 \
  timescale/prometheus-postgresql-adapter:latest \
- -pg-host=pg_prometheus \
- -pg-prometheus-log-samples
+ -pg.host=pg_prometheus \
+ -pg.prometheus-log-samples
 ```
 
 Finally, you can start Prometheus with: