diff --git a/consensus/posv/posv.go b/consensus/posv/posv.go
index 683dbccc16..c8055ae818 100644
--- a/consensus/posv/posv.go
+++ b/consensus/posv/posv.go
@@ -652,7 +652,7 @@ func (c *Posv) verifySeal(chain consensus.ChainReader, header *types.Header, par
 		}
 
 		// verify validator
-		assignedValidator, err := c.GetValidator(creator, snap, chain, header)
+		assignedValidator, err := c.GetValidator(creator, chain, header)
 		if err != nil {
 			return err
 		}
@@ -664,7 +664,7 @@ func (c *Posv) verifySeal(chain consensus.ChainReader, header *types.Header, par
 	return nil
 }
 
-func (c *Posv) GetValidator(creator common.Address, snap *Snapshot, chain consensus.ChainReader, header *types.Header) (common.Address, error) {
+func (c *Posv) GetValidator(creator common.Address, chain consensus.ChainReader, header *types.Header) (common.Address, error) {
 	epoch := c.config.Epoch
 	no := header.Number.Uint64()
 	cpNo := no
diff --git a/eth/backend.go b/eth/backend.go
index b90e19ba75..b31015f043 100644
--- a/eth/backend.go
+++ b/eth/backend.go
@@ -200,16 +200,11 @@ func New(ctx *node.ServiceContext, config *Config) (*Ethereum, error) {
 				log.Error("Cannot get etherbase for append m2 header", "err", err)
 				return block, fmt.Errorf("etherbase missing: %v", err)
 			}
-			// Get m1.
-			snap, err := c.GetSnapshot(eth.blockchain, eth.blockchain.CurrentHeader())
-			if err != nil {
-				return block, fmt.Errorf("can't get snapshot: %v", err)
-			}
 			m1, err := c.RecoverSigner(block.Header())
 			if err != nil {
 				return block, fmt.Errorf("can't get block creator: %v", err)
 			}
-			m2, err := c.GetValidator(m1, snap, eth.blockchain, block.Header())
+			m2, err := c.GetValidator(m1, eth.blockchain, block.Header())
 			if err != nil {
 				return block, fmt.Errorf("can't get block validator: %v", err)
 			}