diff --git a/wallet/nockhash.go b/wallet/nockhash.go
index d4fc0b8..e88ad62 100644
--- a/wallet/nockhash.go
+++ b/wallet/nockhash.go
@@ -211,7 +211,7 @@ func HashSpend(spend *nockchain.NockchainSpend) ([5]uint64, error) {
 	finalSeedHash = crypto.Tip5RehashTenCell(finalSeedHash, crypto.Tip5ZeroZero)
 
 	if seedsCount != 1 {
-		finalSeedHash = crypto.Tip5RehashTenCell(finalSeedHash, crypto.Tip5Zero)
+		finalSeedHash = crypto.Tip5RehashTenCell(crypto.Tip5Zero, finalSeedHash)
 		for i := 1; i < seedsCount; i++ {
 			seedHash, err := HashSeedWithoutSource(spend.Seeds[seedsCount-1-i])
 			if err != nil {
@@ -236,7 +236,8 @@ func HashMsg(spend *nockchain.NockchainSpend) ([5]uint64, error) {
 	finalSeedHash = crypto.Tip5RehashTenCell(finalSeedHash, crypto.Tip5ZeroZero)
 
 	if seedsCount != 1 {
-		finalSeedHash = crypto.Tip5RehashTenCell(finalSeedHash, crypto.Tip5Zero)
+		finalSeedHash = crypto.Tip5RehashTenCell(crypto.Tip5Zero, finalSeedHash)
+
 		for i := 1; i < seedsCount; i++ {
 			seedHash, err := HashSeed(spend.Seeds[seedsCount-1-i])
 			if err != nil {