diff --git a/helm/bundles/cortex-nova/alerts/nova.alerts.yaml b/helm/bundles/cortex-nova/alerts/nova.alerts.yaml
index 0fb9ec9b1..41bf29794 100644
--- a/helm/bundles/cortex-nova/alerts/nova.alerts.yaml
+++ b/helm/bundles/cortex-nova/alerts/nova.alerts.yaml
@@ -627,7 +627,9 @@ groups:
         the datasource controller's workqueue overprioritizing other datasources.
 
   - alert: CortexNovaExistingDatasourcesLackingBehind
-    expr: sum by(datasource) (cortex_datasource_seconds_until_reconcile{queued="true",domain="nova"}) < -600
+    expr: |
+      sum by(datasource) (cortex_datasource_seconds_until_reconcile{queued="true",domain="nova"}) < -600
+      and on(datasource) cortex_datasource_state{state="ready",domain="nova"} == 1
     for: 10m
     labels:
       context: datasources