diff --git a/Docs/SettingUpPSQL.md b/Docs/SettingUpPSQL.md
index 17f0ab606..7a429b062 100644
--- a/Docs/SettingUpPSQL.md
+++ b/Docs/SettingUpPSQL.md
@@ -36,7 +36,7 @@ Save this config file somewhere as "postgresql.conf"
 
 - Start the docker with: `docker run --name osm-cache-db -e POSTGRES_PASSWORD=password -e POSTGRES_USER=user -d -p 5444:5432 -v ~/data/pgsql/:/var/lib/postgresql/data -v postgresql.conf:/var/lib/postgresql/data/postgresql.conf postgis/postgis`
 - Now, change the config file. This can easily be done as the config file is mirrored to the host system at:
-`~/data/pgsql/postgresql.conf`. Overwrite this file with configuration above, e.g. with `cp`
+`~/data/pgsql/postgresql.conf`. Append this file with configuration above, e.g. with `cat posgresql.conf >> ~/data/pgsql/postgresql.conf`
 - Restart the db: `docker restart osm-cache-db`
 
 # Seeding the data