diff --git a/apis/milvus.io/v1beta1/milvus_webhook.go b/apis/milvus.io/v1beta1/milvus_webhook.go
index 9859b4a2..adf2c8a0 100644
--- a/apis/milvus.io/v1beta1/milvus_webhook.go
+++ b/apis/milvus.io/v1beta1/milvus_webhook.go
@@ -360,10 +360,9 @@ func (r *Milvus) defaultEtcd() {
 		if r.Spec.Dep.Etcd.InCluster.Values.Data == nil {
 			r.Spec.Dep.Etcd.InCluster.Values.Data = map[string]interface{}{}
 		}
-		etcdReplicaCountRaw, etcdReplicaCountExists := r.Spec.Dep.Etcd.InCluster.Values.Data["replicaCount"]
-		etcdReplicaCountInt64, etcdReplicaCountValid := etcdReplicaCountRaw.(int64)
+		etcdReplicaCountInt64, etcdReplicaCountValid := util.GetInt64Value(r.Spec.Dep.Etcd.InCluster.Values.Data, "replicaCount")
 		var etcdReplicaCount int
-		if !etcdReplicaCountExists || !etcdReplicaCountValid {
+		if !etcdReplicaCountValid {
 			if r.Spec.Mode == MilvusModeStandalone {
 				etcdReplicaCount = 1
 			} else {
diff --git a/pkg/util/util.go b/pkg/util/util.go
index ccb01f53..ed028abd 100644
--- a/pkg/util/util.go
+++ b/pkg/util/util.go
@@ -21,6 +21,20 @@ import (
 
 const MqTypeConfigKey = "messageQueue"
 
+// GetInt64Value supports int64 / float64 in values
+func GetInt64Value(values map[string]interface{}, fields ...string) (int64, bool) {
+	val, found, err := unstructured.NestedInt64(values, fields...)
+	if err == nil && found {
+		return val, true
+	}
+
+	fval, found, err := unstructured.NestedFloat64(values, fields...)
+	if err == nil && found {
+		return int64(fval), true
+	}
+	return 0, false
+}
+
 func GetBoolValue(values map[string]interface{}, fields ...string) (bool, bool) {
 	val, found, err := unstructured.NestedBool(values, fields...)
 	if err != nil || !found {
diff --git a/test/min-milvus-feature.yaml b/test/min-milvus-feature.yaml
index 5c8e835c..6f9ac451 100644
--- a/test/min-milvus-feature.yaml
+++ b/test/min-milvus-feature.yaml
@@ -65,7 +65,7 @@ spec:
         deletionPolicy: Delete
         pvcDeletion: true
         values:
-          replicaCount: 1
+          replicaCount: 3
     storage:
       inCluster:
         deletionPolicy: Delete