diff --git a/audit/audit_contract.go b/audit/audit_contract.go
index 66f2064..ac9666c 100644
--- a/audit/audit_contract.go
+++ b/audit/audit_contract.go
@@ -95,13 +95,13 @@ func Get(id []byte) []byte {
 }
 
 func List() [][]byte {
-	it := storage.Find(ctx, []byte{})
+	it := storage.Find(ctx, []byte{}, storage.KeysOnly)
 
 	return list(it)
 }
 
 func ListByEpoch(epoch int) [][]byte {
-	it := storage.Find(ctx, epoch)
+	it := storage.Find(ctx, epoch, storage.KeysOnly)
 
 	return list(it)
 }
@@ -110,7 +110,7 @@ func ListByCID(epoch int, cid []byte) [][]byte {
 	var buf interface{} = epoch
 
 	prefix := append(buf.([]byte), cid...)
-	it := storage.Find(ctx, prefix)
+	it := storage.Find(ctx, prefix, storage.KeysOnly)
 
 	return list(it)
 }
@@ -122,7 +122,7 @@ func ListByNode(epoch int, cid []byte, key interop.PublicKey) [][]byte {
 		from:  key,
 	}
 
-	it := storage.Find(ctx, hdr.ID())
+	it := storage.Find(ctx, hdr.ID(), storage.KeysOnly)
 
 	return list(it)
 }
@@ -131,7 +131,7 @@ func list(it iterator.Iterator) [][]byte {
 	var result [][]byte
 
 	for iterator.Next(it) {
-		key := iterator.Key(it).([]byte)
+		key := iterator.Value(it).([]byte) // iterator MUST BE `storage.KeysOnly`
 		if len(key) == netmapContractKeyLn {
 			continue
 		}
diff --git a/balance/balance_contract.go b/balance/balance_contract.go
index 15f3053..fcaa905 100644
--- a/balance/balance_contract.go
+++ b/balance/balance_contract.go
@@ -193,9 +193,9 @@ func NewEpoch(epochNum int) bool {
 	n := common.Vote(ctx, epochID, irKey)
 	if n >= threshold {
 		common.RemoveVotes(ctx, epochID)
-		it := storage.Find(ctx, []byte{})
+		it := storage.Find(ctx, []byte{}, storage.KeysOnly)
 		for iterator.Next(it) {
-			addr := iterator.Key(it).([]byte)
+			addr := iterator.Value(it).([]byte) // it MUST BE `storage.KeysOnly`
 			if len(addr) != 20 {
 				continue
 			}
diff --git a/container/container_contract.go b/container/container_contract.go
index 07e2669..e549840 100644
--- a/container/container_contract.go
+++ b/container/container_contract.go
@@ -322,12 +322,12 @@ func ListContainerSizes(epoch int) [][]byte {
 	key := []byte(estimateKeyPrefix)
 	key = append(key, buf.([]byte)...)
 
-	it := storage.Find(ctx, key)
+	it := storage.Find(ctx, key, storage.KeysOnly)
 
 	var result [][]byte
 
 	for iterator.Next(it) {
-		key := iterator.Key(it).([]byte)
+		key := iterator.Value(it).([]byte) // it MUST BE `storage.KeysOnly`
 		result = append(result, key)
 	}
 
@@ -467,9 +467,9 @@ func remove(ctx storage.Context, key interface{}, value []byte) int {
 func getAllContainers(ctx storage.Context) [][]byte {
 	var list [][]byte
 
-	it := storage.Find(ctx, []byte{})
+	it := storage.Find(ctx, []byte{}, storage.KeysOnly)
 	for iterator.Next(it) {
-		key := iterator.Key(it).([]byte)
+		key := iterator.Value(it).([]byte) // it MUST BE `storage.KeysOnly`
 		if len(key) == containerIDSize {
 			list = append(list, key)
 		}
@@ -577,9 +577,9 @@ func isStorageNode(key interop.PublicKey) bool {
 func keysToDelete(epoch int) [][]byte {
 	results := [][]byte{}
 
-	it := storage.Find(ctx, []byte(estimateKeyPrefix))
+	it := storage.Find(ctx, []byte(estimateKeyPrefix), storage.KeysOnly)
 	for iterator.Next(it) {
-		k := iterator.Key(it).([]byte)
+		k := iterator.Value(it).([]byte) // it MUST BE `storage.KeysOnly`
 		nbytes := k[len(estimateKeyPrefix) : len(k)-32]
 
 		var n interface{} = nbytes
diff --git a/neofs/neofs_contract.go b/neofs/neofs_contract.go
index 4418a22..8f90ca8 100644
--- a/neofs/neofs_contract.go
+++ b/neofs/neofs_contract.go
@@ -477,10 +477,11 @@ func SetConfig(id, key, val []byte) bool {
 func ListConfig() []record {
 	var config []record
 
-	it := storage.Find(ctx, configPrefix)
+	it := storage.Find(ctx, configPrefix, storage.None)
 	for iterator.Next(it) {
-		key := iterator.Key(it).([]byte)
-		val := iterator.Value(it).([]byte)
+		pair := iterator.Value(it).([]interface{})
+		key := pair[0].([]byte)
+		val := pair[1].([]byte)
 		r := record{key: key[len(configPrefix):], val: val}
 
 		config = append(config, r)
diff --git a/netmap/netmap_contract.go b/netmap/netmap_contract.go
index 65ac7af..21203f4 100644
--- a/netmap/netmap_contract.go
+++ b/netmap/netmap_contract.go
@@ -320,10 +320,11 @@ func InitConfig(args [][]byte) bool {
 func ListConfig() []record {
 	var config []record
 
-	it := storage.Find(ctx, configPrefix)
+	it := storage.Find(ctx, configPrefix, storage.None)
 	for iterator.Next(it) {
-		key := iterator.Key(it).([]byte)
-		val := iterator.Value(it).([]byte)
+		pair := iterator.Value(it).([]interface{})
+		key := pair[0].([]byte)
+		val := pair[1].([]byte)
 		r := record{key: key[len(configPrefix):], val: val}
 
 		config = append(config, r)