diff --git a/consensus/beacon/oplegacy.go b/consensus/beacon/oplegacy.go
index b7780e5bde..7cb83fe23f 100644
--- a/consensus/beacon/oplegacy.go
+++ b/consensus/beacon/oplegacy.go
@@ -8,6 +8,7 @@ import (
 	"github.com/ethereum/go-ethereum/consensus"
 	"github.com/ethereum/go-ethereum/core/state"
 	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/rpc"
 )
 
@@ -25,7 +26,9 @@ func (o *OpLegacy) VerifyHeader(chain consensus.ChainHeaderReader, header *types
 	}
 	parent := chain.GetHeader(header.ParentHash, number-1)
 	if parent == nil {
-		return consensus.ErrUnknownAncestor
+		log.Warn("Failed to get parent header", "hash", header.Hash().String(), "number", number, "parentHash", header.ParentHash.String, "parentNumber", number-1,
+			"fn", "VerifyHeader")
+		// return consensus.ErrUnknownAncestor
 	}
 	return nil // legacy chain is verified by block-hash reverse sync otherwise
 }
@@ -42,7 +45,8 @@ func (o *OpLegacy) VerifyHeaders(chain consensus.ChainHeaderReader, headers []*t
 		}
 		var err error
 		if parent == nil {
-			err = consensus.ErrUnknownAncestor
+			log.Warn("Failed to get parent header", "hash", header.Hash().String(), "number", header.Number.Uint64(), "parentHash", header.ParentHash.String, "parentNumber", header.Number.Uint64()-1, "fn", "VerifyHeaders")
+			// err = consensus.ErrUnknownAncestor
 		} else {
 			err = o.VerifyHeader(chain, header)
 		}