diff --git a/postgres/README.md b/postgres/README.md
index d6fdcfe9f..75811d5be 100644
--- a/postgres/README.md
+++ b/postgres/README.md
@@ -178,7 +178,7 @@ For example:
 
 ```console
 $ docker run -d \
-	-name some-postgres \
+	--name some-postgres \
 	-e POSTGRES_PASSWORD=mysecretpassword \
 	-e PGDATA=/var/lib/postgresql/data/pgdata \
 	-v /custom/mount:/var/lib/postgresql/data \