diff --git a/molecule/rocky9/tests/test_default.py b/molecule/rocky9/tests/test_default.py
index db08dbc..1ecfe27 100644
--- a/molecule/rocky9/tests/test_default.py
+++ b/molecule/rocky9/tests/test_default.py
@@ -15,8 +15,7 @@ def test_postgres_running_and_enabled(host):
 
 def test_postgres_auth(host):
     login = host.run(
-        "source /etc/containers/systemd/postgres.env;"
-        "podman exec --env PGPASSWORD=$POSTGRES_PASSWORD systemd-postgres psql -U$POSTGRES_USER -c 'select 1' -q $POSTGRES_DB"  # noqa :E501
+        "podman exec --env PGPASSWORD=postgres systemd-postgres psql -Upostgres -c 'select 1' -q postgres"  # noqa :E501
     )
     assert login.succeeded
 
diff --git a/templates/etc/containers/systemd/postgres.env.j2 b/templates/etc/containers/systemd/postgres.env.j2
index 602a575..75d14f7 100644
--- a/templates/etc/containers/systemd/postgres.env.j2
+++ b/templates/etc/containers/systemd/postgres.env.j2
@@ -8,5 +8,5 @@ POSTGRES_DB={{ postgres_db }}
 POSTGRES_HOST_AUTH_METHOD={{ postgres_host_auth_method }}
 {% endif %}
 {% if postgres_initdb_args | length > 0 %}
-POSTGRES_INITDB_ARGS="{{ postgres_initdb_args | join(' ') }}"
+POSTGRES_INITDB_ARGS={{ postgres_initdb_args | join(" ") }}
 {% endif %}