diff --git a/nimbus/utils/addresses.nim b/nimbus/utils/addresses.nim
index 4e702f995..850952ca8 100644
--- a/nimbus/utils/addresses.nim
+++ b/nimbus/utils/addresses.nim
@@ -1,4 +1,4 @@
 import nimcrypto, eth_common, rlp
 
 func generateAddress*(address: EthAddress, nonce: AccountNonce): EthAddress =
-  result[0..19] = keccak256.digest(rlp.encodeList(address, nonce).toOpenArray).data[12..31]
+  result[0..19] = keccak256.digest(rlp.encodeList(address, nonce).toOpenArray).data.toOpenArray(12, 31)