diff --git a/types/validation.go b/types/validation.go
index 5734a636e..0d0c7a1ed 100644
--- a/types/validation.go
+++ b/types/validation.go
@@ -78,8 +78,8 @@ func (b *Block) ValidateWithState(state *State) error {
 	}
 
 	proposerHash := state.GetProposerHash()
-	if !bytes.Equal(b.Header.NextSequencersHash[:], proposerHash) {
-		return NewErrInvalidNextSequencersHashFraud([32]byte(proposerHash), b.Header.NextSequencersHash)
+	if !bytes.Equal(b.Header.SequencerHash[:], proposerHash) {
+		return NewErrInvalidSequencerHashFraud([32]byte(proposerHash), b.Header.SequencerHash[:])
 	}
 
 	if !bytes.Equal(b.Header.AppHash[:], state.AppHash[:]) {
@@ -152,7 +152,7 @@ func (c *Commit) ValidateWithHeader(proposerPubKey tmcrypto.PubKey, header *Head
 	}
 
 	if !bytes.Equal(header.SequencerHash[:], proposerHash) {
-		return NewErrInvalidSequencerHashFraud(header.SequencerHash, proposerHash)
+		return NewErrInvalidSequencerHashFraud(header.SequencerHash, proposerHash[:])
 	}
 
 	if c.HeaderHash != header.Hash() {
diff --git a/types/validation_test.go b/types/validation_test.go
index c95ae9d68..14af79dd9 100644
--- a/types/validation_test.go
+++ b/types/validation_test.go
@@ -42,15 +42,15 @@ func TestBlock_ValidateWithState(t *testing.T) {
 				Block: 1,
 				App:   1,
 			},
-			Height:             10,
-			Time:               uint64(currentTime.UnixNano()),
-			AppHash:            [32]byte{1, 2, 3},
-			LastResultsHash:    [32]byte{4, 5, 6},
-			ProposerAddress:    []byte("proposer"),
-			DataHash:           [32]byte{},
-			LastHeaderHash:     [32]byte{7, 8, 9},
-			ChainID:            "chainID",
-			NextSequencersHash: [32]byte(proposerHash),
+			Height:          10,
+			Time:            uint64(currentTime.UnixNano()),
+			AppHash:         [32]byte{1, 2, 3},
+			LastResultsHash: [32]byte{4, 5, 6},
+			ProposerAddress: []byte("proposer"),
+			DataHash:        [32]byte{},
+			LastHeaderHash:  [32]byte{7, 8, 9},
+			ChainID:         "chainID",
+			SequencerHash:  [32]byte(proposerHash),
 		},
 		Data:       Data{},
 		LastCommit: Commit{},