diff --git a/container/container_contract.go b/container/container_contract.go
index b10b10c..95d91ad 100644
--- a/container/container_contract.go
+++ b/container/container_contract.go
@@ -744,10 +744,9 @@ func estimationKey(epoch int, cid []byte, key interop.PublicKey) []byte {
 func getContainerSizeEstimation(ctx storage.Context, key, cid []byte) containerSizes {
 	var estimations []estimation
 
-	it := storage.Find(ctx, key, storage.ValuesOnly)
+	it := storage.Find(ctx, key, storage.ValuesOnly|storage.DeserializeValues)
 	for iterator.Next(it) {
-		rawEstimation := iterator.Value(it).([]byte)
-		est := std.Deserialize(rawEstimation).(estimation)
+		est := iterator.Value(it).(estimation)
 		estimations = append(estimations, est)
 	}
 
diff --git a/netmap/netmap_contract.go b/netmap/netmap_contract.go
index f93ecc0..f6eae40 100644
--- a/netmap/netmap_contract.go
+++ b/netmap/netmap_contract.go
@@ -537,10 +537,9 @@ func filterNetmap(ctx storage.Context, st nodeState) []storageNode {
 func getNetmapNodes(ctx storage.Context) []netmapNode {
 	result := []netmapNode{}
 
-	it := storage.Find(ctx, candidatePrefix, storage.ValuesOnly)
+	it := storage.Find(ctx, candidatePrefix, storage.ValuesOnly|storage.DeserializeValues)
 	for iterator.Next(it) {
-		rawNode := iterator.Value(it).([]byte)
-		node := std.Deserialize(rawNode).(netmapNode)
+		node := iterator.Value(it).(netmapNode)
 		result = append(result, node)
 	}