diff --git a/ethereum/rpc/types/utils.go b/ethereum/rpc/types/utils.go
index 51464d30f..218551720 100644
--- a/ethereum/rpc/types/utils.go
+++ b/ethereum/rpc/types/utils.go
@@ -183,7 +183,7 @@ func FormatBlock(
 		"number":           hexutil.Uint64(header.Height),
 		"hash":             hexutil.Bytes(header.Hash()),
 		"parentHash":       hexutil.Bytes(header.LastBlockID.Hash),
-		"nonce":            hexutil.Uint64(0),       // PoW specific
+		"nonce":            ethtypes.BlockNonce{},   // PoW specific
 		"sha3Uncles":       ethtypes.EmptyUncleHash, // No uncles in Tendermint
 		"logsBloom":        bloom,
 		"stateRoot":        hexutil.Bytes(header.AppHash),