diff --git a/documentation/prometheus-mixin/alerts.libsonnet b/documentation/prometheus-mixin/alerts.libsonnet
index 71fad98c2eb15dccd5792937f13ee744817da6ee..870631685e9cf28171422b284cb99cbe8185fd08 100644
--- a/documentation/prometheus-mixin/alerts.libsonnet
+++ b/documentation/prometheus-mixin/alerts.libsonnet
@@ -218,7 +218,7 @@
               # https://www.robustperception.io/alerting-on-gauges-in-prometheus-2-0 for details.
               (
                 max_over_time(prometheus_remote_storage_shards_desired{%(prometheusSelector)s}[5m])
-              > on(job, instance) group_right
+              >
                 max_over_time(prometheus_remote_storage_shards_max{%(prometheusSelector)s}[5m])
               )
             ||| % $._config,