diff --git a/fluffy/eth_data/era1.nim b/fluffy/eth_data/era1.nim
index 2f4f670eb..150673d8c 100644
--- a/fluffy/eth_data/era1.nim
+++ b/fluffy/eth_data/era1.nim
@@ -467,7 +467,7 @@ proc verify*(f: Era1File): Result[Digest, string] =
         ?f.getBlockTuple(blockNumber)
 
       txRoot = calcTxRoot(blockBody.transactions)
-      ommershHash = keccakHash(rlp.encode(blockBody.uncles))
+      ommershHash = rlpHash(blockBody.uncles)
 
     if blockHeader.txRoot != txRoot:
       return err("Invalid transactions root")
diff --git a/fluffy/network/state/state_validation.nim b/fluffy/network/state/state_validation.nim
index 7ad90bc18..200dba922 100644
--- a/fluffy/network/state/state_validation.nim
+++ b/fluffy/network/state/state_validation.nim
@@ -24,7 +24,7 @@ proc isValidNextNode(
   let nextHash =
     if hashOrShortRlp.isList():
       # is a short node
-      keccakHash(rlp.encode(hashOrShortRlp))
+      rlpHash(hashOrShortRlp)
     else:
       let hash = hashOrShortRlp.toBytes()
       if hash.len() != 32:
diff --git a/fluffy/rpc/rpc_eth_api.nim b/fluffy/rpc/rpc_eth_api.nim
index 09b772d48..f9d85dd4a 100644
--- a/fluffy/rpc/rpc_eth_api.nim
+++ b/fluffy/rpc/rpc_eth_api.nim
@@ -119,7 +119,7 @@ func init*(
         inc i
     else:
       for tx in body.transactions:
-        blockObject.transactions.add txOrHash(w3Hash keccakHash(rlp.encode(tx)))
+        blockObject.transactions.add txOrHash(w3Hash rlpHash(tx))
 
   blockObject