diff --git a/apps/k8s01/mastodon/slo.yaml b/apps/k8s01/mastodon/slo.yaml
index bd76d07edc5166d7c6dd5e1a0c80bb74e52403e4..6805dc19674b40084fbf3094cd5dab1f8890c9d7 100644
--- a/apps/k8s01/mastodon/slo.yaml
+++ b/apps/k8s01/mastodon/slo.yaml
@@ -11,7 +11,7 @@ spec:
       description: "Mastodon: SLO based on failed jobs in sidekiq."
       sli:
         events:
-          errorQuery: (sum(rate(sidekiq_failed_jobs_total{namespace="mastodon"}[{{.window}}]))
+          errorQuery: sum(rate(sidekiq_failed_jobs_total{namespace="mastodon"}[{{.window}}]))
           totalQuery: sum(rate(sidekiq_processed_jobs_total{namespace="mastodon"}[{{.window}}]) + rate(sidekiq_failed_jobs_total{namespace="mastodon"}[{{.window}}]))
       alerting:
         name: MastodonSidekiqProccessingHighErrorRate