diff --git a/nixos/tests/prometheus.nix b/nixos/tests/prometheus.nix
index ade097597bb8..374fb2d634b4 100644
--- a/nixos/tests/prometheus.nix
+++ b/nixos/tests/prometheus.nix
@@ -5,9 +5,6 @@ import ./make-test.nix {
     one = { config, pkgs, ... }: {
       services.prometheus = {
         enable = true;
-        globalConfig = {
-          labels = { foo = "bar"; };
-        };
         scrapeConfigs = [{
           job_name = "prometheus";
           static_configs = [{