diff --git a/monitoring/mongodb/alerts.test.yaml b/monitoring/mongodb/alerts.test.yaml
index d59db119e..c6d3bf337 100644
--- a/monitoring/mongodb/alerts.test.yaml
+++ b/monitoring/mongodb/alerts.test.yaml
@@ -333,19 +333,32 @@ tests:
   - name: MongoDbRSNotSynced
     interval: 1m
     input_series:
-      - series: mongodb_rs_members_state{namespace="zenko", rs_nm="rs0", pod="data-db-mongodb-sharded-mongos-2", member_state="SECONDARY"}
+      - series: mongodb_rs_members_state{namespace="zenko", pod="data-db-mongodb-sharded-shard0-data-0", member_state="PRIMARY", rs_nm="data-db-mongodb-sharded-shard-0", member_idx="data-db-mongodb-sharded-shard0-data-0.data-db-mongodb-sharded-headless.zenko.svc.cluster.local:27017"}
         values: 1x10
-  
+      - series: mongodb_rs_members_state{namespace="zenko", pod="data-db-mongodb-sharded-shard0-data-0", member_state="SECONDARY", rs_nm="data-db-mongodb-sharded-shard-0", member_idx="data-db-mongodb-sharded-shard0-data-1.data-db-mongodb-sharded-headless.zenko.svc.cluster.local:27017"}
+        values: 2x10
+      - series: mongodb_rs_members_state{namespace="zenko", pod="data-db-mongodb-sharded-shard0-data-0", member_state="SECONDARY", rs_nm="data-db-mongodb-sharded-shard-0", member_idx="data-db-mongodb-sharded-shard0-data-2.data-db-mongodb-sharded-headless.zenko.svc.cluster.local:27017"}
+        values: 2x10
+      - series: mongodb_rs_members_state{namespace="zenko", pod="data-db-mongodb-sharded-shard0-data-1", member_state="PRIMARY", rs_nm="data-db-mongodb-sharded-shard-0", member_idx="data-db-mongodb-sharded-shard0-data-0.data-db-mongodb-sharded-headless.zenko.svc.cluster.local:27017"}
+        values: 1x10
+      - series: mongodb_rs_members_state{namespace="zenko", pod="data-db-mongodb-sharded-shard0-data-1", member_state="SECONDARY", rs_nm="data-db-mongodb-sharded-shard-0", member_idx="data-db-mongodb-sharded-shard0-data-1.data-db-mongodb-sharded-headless.zenko.svc.cluster.local:27017"}
+        values: 2x10
+      - series: mongodb_rs_members_state{namespace="zenko", pod="data-db-mongodb-sharded-shard0-data-1", member_state="SECONDARY", rs_nm="data-db-mongodb-sharded-shard-0", member_idx="data-db-mongodb-sharded-shard0-data-2.data-db-mongodb-sharded-headless.zenko.svc.cluster.local:27017"}
+        values: 2x10
+      - series: mongodb_rs_members_state{namespace="zenko", pod="data-db-mongodb-sharded-shard0-data-2", member_state="PRIMARY", rs_nm="data-db-mongodb-sharded-shard-0", member_idx="data-db-mongodb-sharded-shard0-data-0.data-db-mongodb-sharded-headless.zenko.svc.cluster.local:27017"}
+        values: 1x10
+      - series: mongodb_rs_members_state{namespace="zenko", pod="data-db-mongodb-sharded-shard0-data-2", member_state="SECONDARY", rs_nm="data-db-mongodb-sharded-shard-0", member_idx="data-db-mongodb-sharded-shard0-data-1.data-db-mongodb-sharded-headless.zenko.svc.cluster.local:27017"}
+        values: 2x10
+      - series: mongodb_rs_members_state{namespace="zenko", pod="data-db-mongodb-sharded-shard0-data-2", member_state="(not reachable/healthy)", rs_nm="data-db-mongodb-sharded-shard-0", member_idx="data-db-mongodb-sharded-shard0-data-2.data-db-mongodb-sharded-headless.zenko.svc.cluster.local:27017"}
+        values: 2 _ _ _ _ _ _ _ _ _
+
     alert_rule_test:
       - alertname: MongoDbRSNotSynced
         eval_time: 10m
         exp_alerts:
           - exp_labels:
               severity: warning
-              rs_nm: rs0
+              rs_nm: data-db-mongodb-sharded-shard-0
             exp_annotations:
-              description: "MongoDB replica set `rs0` is not in the expected state. It currently has `1` SECONDARY members instead of the expected number. Please ensure that all instance are running properly."
+              description: "MongoDB replica set `data-db-mongodb-sharded-shard-0` is not in the expected state. It currently has `1` SECONDARY members instead of the expected number. Please ensure that all instances are running properly."
               summary: MongoDB replica set out of sync
-
-
-
diff --git a/monitoring/mongodb/alerts.yaml b/monitoring/mongodb/alerts.yaml
index 9ad78cb13..f5acde22f 100644
--- a/monitoring/mongodb/alerts.yaml
+++ b/monitoring/mongodb/alerts.yaml
@@ -183,10 +183,10 @@ groups:
 
   - alert: MongoDbRSNotSynced
     expr: |
-      count by (rs_nm, instance) (mongodb_rs_members_state{namespace="${namespace}", pod=~"${service}.*", member_state="SECONDARY"}) != (${replicas} - 1)
+      floor(avg by(rs_nm)(count by (rs_nm, pod)(mongodb_rs_members_state{namespace="${namespace}", pod=~"${service}.*", member_state="SECONDARY"}))) != (${replicas} - 1) 
     for: 10m
     labels:
       severity: warning
     annotations:
-      description: "MongoDB replica set `{{ $labels.rs_nm }}` is not in the expected state. It currently has `{{ $value }}` SECONDARY members instead of the expected number. Please ensure that all instance are running properly."
+      description: "MongoDB replica set `{{ $labels.rs_nm }}` is not in the expected state. It currently has `{{ $value }}` SECONDARY members instead of the expected number. Please ensure that all instances are running properly."
       summary: MongoDB replica set out of sync