diff --git a/prometheus/prom_rules/prometheus.rules.yml b/prometheus/prom_rules/prometheus.rules.yml
index 65377d2cca..4d55eb95f2 100644
--- a/prometheus/prom_rules/prometheus.rules.yml
+++ b/prometheus/prom_rules/prometheus.rules.yml
@@ -297,16 +297,16 @@ groups:
       description: 'Node {{ $labels.instance }} in Joining mode for 1 day'
       summary: Node {{ $labels.instance }} in Joining mode for 1 day
   - alert: splitBrain
-    expr: sum(scylla_gossip_live) >= (count(scylla_node_operation_mode==3)-1) * count(scylla_gossip_live)
+    expr: sum(scylla_gossip_live) < (count(scylla_node_operation_mode==3)-1) * count(scylla_gossip_live)
     for: 10m
     labels:
       severity: "warn"
       description: 'Cluster in a split-brain mode'
-      summary: Some nodes the cluster do not see all of the other live nodes
+      summary: Some nodes in the cluster do not see all of the other live nodes
   - alert: bloomFilterSize
     expr: scylla_sstables_bloom_filter_memory_size/scylla_memory_total_memory > 0.1
     for: 10m
     labels:
       severity: "warn"
-      description: 'Bloom filter size'
+      description: 'Bloom filter size in node {{ $labels.instance }}'
       summary: The bloom filter takes too much memory, update bloom_filter_fp_chance