diff --git a/nixos/tests/prometheus-exporters.nix b/nixos/tests/prometheus-exporters.nix
index a7e946f5c46e..53080403dd64 100644
--- a/nixos/tests/prometheus-exporters.nix
+++ b/nixos/tests/prometheus-exporters.nix
@@ -595,7 +595,7 @@ let
           };
         };
         enable = true;
-        user = "postgres";
+        user = "prometheus-sql-exporter";
       };
       metricProvider = {
         services.postgresql = {