diff --git a/pkg/reader.go b/pkg/reader.go
index e79cdce..21e506b 100644
--- a/pkg/reader.go
+++ b/pkg/reader.go
@@ -90,11 +90,11 @@ func NewLvlDBReader(conf LvLDBReaderConfig) (*LvlDBReader, error) {
 func (ldr *LvlDBReader) GetBlockByHash(hash common.Hash) (*types.Block, error) {
 	height := rawdb.ReadHeaderNumber(ldr.ethDB, hash)
 	if height == nil {
-		return nil, fmt.Errorf("unable to read header height for header hash %s", hash.String())
+		return nil, fmt.Errorf("unable to read header height for header hash %s", hash)
 	}
 	block := rawdb.ReadBlock(ldr.ethDB, hash, *height)
 	if block == nil {
-		return nil, fmt.Errorf("unable to read block at height %d hash %s", *height, hash.String())
+		return nil, fmt.Errorf("unable to read block at height %d hash %s", *height, hash)
 	}
 	return block, nil
 }
@@ -103,7 +103,7 @@ func (ldr *LvlDBReader) GetBlockByNumber(number uint64) (*types.Block, error) {
 	hash := rawdb.ReadCanonicalHash(ldr.ethDB, number)
 	block := rawdb.ReadBlock(ldr.ethDB, hash, number)
 	if block == nil {
-		return nil, fmt.Errorf("unable to read block at height %d hash %s", number, hash.String())
+		return nil, fmt.Errorf("unable to read block at height %d hash %s", number, hash)
 	}
 	return block, nil
 }
@@ -112,11 +112,11 @@ func (ldr *LvlDBReader) GetBlockByNumber(number uint64) (*types.Block, error) {
 func (ldr *LvlDBReader) GetReceiptsByHash(hash common.Hash) (types.Receipts, error) {
 	number := rawdb.ReadHeaderNumber(ldr.ethDB, hash)
 	if number == nil {
-		return nil, fmt.Errorf("unable to read header height for header hash %s", hash.String())
+		return nil, fmt.Errorf("unable to read header height for header hash %s", hash)
 	}
 	receipts := rawdb.ReadReceipts(ldr.ethDB, hash, *number, ldr.chainConfig)
 	if receipts == nil {
-		return nil, fmt.Errorf("unable to read receipts at height %d hash %s", number, hash.String())
+		return nil, fmt.Errorf("unable to read receipts at height %d hash %s", number, hash)
 	}
 	return receipts, nil
 }
@@ -125,11 +125,11 @@ func (ldr *LvlDBReader) GetReceiptsByHash(hash common.Hash) (types.Receipts, err
 func (ldr *LvlDBReader) GetTdByHash(hash common.Hash) (*big.Int, error) {
 	number := rawdb.ReadHeaderNumber(ldr.ethDB, hash)
 	if number == nil {
-		return nil, fmt.Errorf("unable to read header height for header hash %s", hash.String())
+		return nil, fmt.Errorf("unable to read header height for header hash %s", hash)
 	}
 	td := rawdb.ReadTd(ldr.ethDB, hash, *number)
 	if td == nil {
-		return nil, fmt.Errorf("unable to read total difficulty at height %d hash %s", number, hash.String())
+		return nil, fmt.Errorf("unable to read total difficulty at height %d hash %s", number, hash)
 	}
 	return td, nil
 }