diff --git a/pkg/cluster/pod.go b/pkg/cluster/pod.go
index 84ae9184b89cb253cc8679b5a9dc4f5bebad932d..b5415dc4ec2674042fbb252d0bc562809eff61fd 100644
--- a/pkg/cluster/pod.go
+++ b/pkg/cluster/pod.go
@@ -514,11 +514,11 @@ func (c *Cluster) getSwitchoverCandidate(master *v1.Pod) (spec.NamespacedName, e
 	// pick candidate with lowest lag
 	// if sync_standby replicas were found assume synchronous_mode is enabled and ignore other candidates list
 	if len(syncCandidates) > 0 {
-		sort.Slice(syncCandidates, func(i, j int) bool { return syncCandidates[i].Lag < syncCandidates[j].Lag })
+		sort.Slice(syncCandidates, func(i, j int) bool { return syncCandidates[i].LagInMb < syncCandidates[j].LagInMb })
 		return spec.NamespacedName{Namespace: master.Namespace, Name: syncCandidates[0].Name}, nil
 	}
 	if len(candidates) > 0 {
-		sort.Slice(candidates, func(i, j int) bool { return candidates[i].Lag < candidates[j].Lag })
+		sort.Slice(candidates, func(i, j int) bool { return candidates[i].LagInMb < candidates[j].LagInMb })
 		return spec.NamespacedName{Namespace: master.Namespace, Name: candidates[0].Name}, nil
 	}
 
diff --git a/pkg/util/patroni/patroni.go b/pkg/util/patroni/patroni.go
index b73c543bdb3fdb6eedf83edb58649808a9f78f94..f030659caef29e5c2d47e97a625635cc78b21cb1 100644
--- a/pkg/util/patroni/patroni.go
+++ b/pkg/util/patroni/patroni.go
@@ -188,7 +188,7 @@ type ClusterMember struct {
 	Role     string `json:"role"`
 	State    string `json:"state"`
 	Timeline int    `json:"timeline"`
-	Lag      int    `json:"lag"`
+	LagInMb  int    `json:"lag"`
 }
 
 // MemberDataPatroni child element
diff --git a/pkg/util/patroni/patroni_test.go b/pkg/util/patroni/patroni_test.go
index f5b42ddb9d00897951f1880650f44ef3854199e5..48d27c8dc11d115cb3bba7aba0e7d7e31b2eddba 100644
--- a/pkg/util/patroni/patroni_test.go
+++ b/pkg/util/patroni/patroni_test.go
@@ -95,19 +95,19 @@ func TestGetClusterMembers(t *testing.T) {
 			Role:     "leader",
 			State:    "running",
 			Timeline: 1,
-			Lag:      0,
+			LagInMb:  0,
 		}, {
 			Name:     "acid-test-cluster-1",
 			Role:     "sync_standby",
 			State:    "running",
 			Timeline: 1,
-			Lag:      0,
+			LagInMb:  0,
 		}, {
 			Name:     "acid-test-cluster-2",
 			Role:     "replica",
 			State:    "running",
 			Timeline: 1,
-			Lag:      0,
+			LagInMb:  0,
 		}}
 
 	json := `{"members": [{"name": "acid-test-cluster-0", "role": "leader", "state": "running", "api_url": "http://192.168.100.1:8008/patroni", "host": "192.168.100.1", "port": 5432, "timeline": 1}, {"name": "acid-test-cluster-1", "role": "sync_standby", "state": "running", "api_url": "http://192.168.100.2:8008/patroni", "host": "192.168.100.2", "port": 5432, "timeline": 1, "lag": 0}, {"name": "acid-test-cluster-2", "role": "replica", "state": "running", "api_url": "http://192.168.100.3:8008/patroni", "host": "192.168.100.3", "port": 5432, "timeline": 1, "lag": 0}]}`