diff --git a/consensus/parlia/parlia.go b/consensus/parlia/parlia.go
index a9ddfb7e76..c16e04c179 100644
--- a/consensus/parlia/parlia.go
+++ b/consensus/parlia/parlia.go
@@ -1103,7 +1103,7 @@ func (p *Parlia) assembleVoteAttestation(chain consensus.ChainHeaderReader, head
 	// Validate vote data consistency
 	for _, vote := range votes {
 		if vote.Data.Hash() != attestation.Data.Hash() {
-			return fmt.Errorf("vote check error, expected: %v, real: %v", attestation.Data, vote)
+			return fmt.Errorf("vote check error, expected: %v, real: %v", attestation.Data, vote.Data)
 		}
 	}
 	// Prepare aggregated vote signature
@@ -1754,7 +1754,7 @@ func (p *Parlia) Seal(chain consensus.ChainHeaderReader, block *types.Block, res
 		if err != nil {
 			/* If the vote attestation can't be assembled successfully, the blockchain won't get
 			   fast finalized, but it can be tolerated, so just report this error here. */
-			log.Error("Assemble vote attestation failed when sealing", "err", err)
+			log.Debug("Assemble vote attestation failed when sealing", "err", err)
 		}
 
 		// Sign all the things!
diff --git a/consensus/parlia/snapshot.go b/consensus/parlia/snapshot.go
index 587116f2e2..ecabc62a56 100644
--- a/consensus/parlia/snapshot.go
+++ b/consensus/parlia/snapshot.go
@@ -207,14 +207,16 @@ func (s *Snapshot) updateAttestation(header *types.Header, chainConfig *params.C
 	}
 
 	// Headers with bad attestation are accepted before Plato upgrade,
-	// but Attestation of snapshot is only updated when the target block is direct parent of the header
-	targetNumber := attestation.Data.TargetNumber
-	targetHash := attestation.Data.TargetHash
-	if targetHash != header.ParentHash || targetNumber+1 != header.Number.Uint64() {
-		log.Warn("updateAttestation failed", "error", fmt.Errorf("invalid attestation, target mismatch, expected block: %d, hash: %s; real block: %d, hash: %s",
-			header.Number.Uint64()-1, header.ParentHash, targetNumber, targetHash))
-		updateAttestationErrorCounter.Inc(1)
-		return
+	// but Attestation of snapshot is only updated when the target block is direct parent of the header before Fermi upgrade
+	if !chainConfig.IsFermi(header.Number, header.Time) {
+		targetNumber := attestation.Data.TargetNumber
+		targetHash := attestation.Data.TargetHash
+		if targetHash != header.ParentHash || targetNumber+1 != header.Number.Uint64() {
+			log.Warn("updateAttestation failed", "error", fmt.Errorf("invalid attestation, target mismatch, expected block: %d, hash: %s; real block: %d, hash: %s",
+				header.Number.Uint64()-1, header.ParentHash, targetNumber, targetHash))
+			updateAttestationErrorCounter.Inc(1)
+			return
+		}
 	}
 
 	// Update attestation