diff --git a/prometheus/exporter/postgres.sls b/prometheus/exporter/postgres.sls
index f68ea09..55a3e09 100644
--- a/prometheus/exporter/postgres.sls
+++ b/prometheus/exporter/postgres.sls
@@ -40,8 +40,8 @@ postgres_exporter_service_unit:
     - template: jinja
     - defaults:
         svc: postgres_exporter
-        user: {{ prometheus.user }}
-        group: {{ prometheus.group }}
+        user: {{ prometheus.exporter.postgres.args.get('user', prometheus.user) }}
+        group: {{ prometheus.exporter.postgres.args.get('group', prometheus.group) }}
         bin_path: {{ prometheus.exporter.postgres.version_path }}
         args: {{ prometheus.exporter.postgres.args.service_args }}
         url: {{ prometheus.exporter.postgres.args.url }}