diff --git a/api/handler/object_list_test.go b/api/handler/object_list_test.go
index 7b813e7..1a41086 100644
--- a/api/handler/object_list_test.go
+++ b/api/handler/object_list_test.go
@@ -222,7 +222,7 @@ func TestListObjectsVersionsPaging(t *testing.T) {
 	bktName := "bucket-versioning-enabled"
 	createTestBucket(hc, bktName)
 
-	n := 10
+	n := 12
 
 	var objects []string
 	for i := 0; i < n; i++ {
diff --git a/pkg/service/tree/tree_client_in_memory.go b/pkg/service/tree/tree_client_in_memory.go
index 1429c0b..f70c973 100644
--- a/pkg/service/tree/tree_client_in_memory.go
+++ b/pkg/service/tree/tree_client_in_memory.go
@@ -147,7 +147,6 @@ func (t *memoryTree) createPathIfNotExist(parent *treeNodeMemory, path []string)
 		}
 		t.idCounter++
 		parent.children = append(parent.children, node)
-		//sortNodes(parent.children)
 	}
 
 	return t.createPathIfNotExist(node, path[1:])
@@ -224,6 +223,8 @@ func (c *ServiceClientMemory) GetSubTree(_ context.Context, bktInfo *data.Bucket
 		return nil, ErrNodeNotFound
 	}
 
+	sortNode(tr.treeData)
+
 	node := tr.treeData.getNode(rootID)
 	if node == nil {
 		return nil, ErrNodeNotFound
@@ -266,6 +267,8 @@ func (c *ServiceClientMemory) GetSubTreeStream(_ context.Context, bktInfo *data.
 		return nil, ErrNodeNotFound
 	}
 
+	sortNode(tr.treeData)
+
 	return &SubTreeStreamMemoryImpl{
 		res:    node.listNodes(nil, depth-1),
 		offset: 0,
@@ -375,7 +378,6 @@ func (c *ServiceClientMemory) AddNodeByPath(_ context.Context, bktInfo *data.Buc
 	}
 
 	parentNode.children = append(parentNode.children, tn)
-	//sortNodes(parentNode.children)
 	cnr.trees[treeID] = tr
 
 	return newID, nil
@@ -406,20 +408,11 @@ func (c *ServiceClientMemory) MoveNode(_ context.Context, bktInfo *data.BucketIn
 	node.data.parentID = parentID
 
 	newParent.children = append(newParent.children, node)
-	//sortNodes(newParent.children)
 	node.parent.removeChild(nodeID)
 
 	return nil
 }
 
-func (c *ServiceClientMemory) Sort() {
-	for _, info := range c.containers {
-		for _, tree := range info.trees {
-			sortNode(tree.treeData)
-		}
-	}
-}
-
 func sortNode(node *treeNodeMemory) {
 	if node == nil {
 		return