diff --git a/golem/transactions/ethereum/ethereumincomeskeeper.py b/golem/transactions/ethereum/ethereumincomeskeeper.py
index ad25d455b1..c767725dd0 100644
--- a/golem/transactions/ethereum/ethereumincomeskeeper.py
+++ b/golem/transactions/ethereum/ethereumincomeskeeper.py
@@ -9,7 +9,7 @@
 
 
 class EthereumIncomesKeeper(IncomesKeeper):
-    BLOCK_NUMBER_DB_KEY = 'eth_incomes_keeper_block_number'
+    BLOCK_NUMBER_DB_KEY = 'eth_incomes_keeper_block_number_v2'
     BLOCK_NUMBER_BUFFER = 50
 
     def __init__(self, sci) -> None:
diff --git a/golem/utils.py b/golem/utils.py
index 251bdd42d1..c27ca4a46b 100644
--- a/golem/utils.py
+++ b/golem/utils.py
@@ -5,6 +5,7 @@
 
 import semantic_version
 
+from eth_utils import to_checksum_address
 from ethereum.utils import sha3
 
 logger = logging.getLogger(__name__)
@@ -69,7 +70,7 @@ def encode_hex(b):
 
 
 def pubkeytoaddr(pubkey: str) -> str:
-    return '0x' + encode_hex(sha3(decode_hex(pubkey))[12:])
+    return to_checksum_address('0x' + encode_hex(sha3(decode_hex(pubkey))[12:]))
 
 
 def tee_target(prefix, proc, input_stream, path, stream):
diff --git a/tests/golem/test_utils.py b/tests/golem/test_utils.py
index d12afdb70e..ca71a94f88 100644
--- a/tests/golem/test_utils.py
+++ b/tests/golem/test_utils.py
@@ -1,5 +1,7 @@
+import os
 import unittest
 
+from eth_utils import encode_hex, is_checksum_address
 import faker
 import semantic_version
 
@@ -46,3 +48,9 @@ def test_None(self):
 
     def test_invalid(self):
         self.assertFalse(utils.is_version_compatible(fake.word(), self.spec))  # noqa pylint: disable=no-member
+
+
+def test_pubkeytoaddr():
+    pubkey = encode_hex(os.urandom(64))
+    addr = utils.pubkeytoaddr(pubkey)
+    assert is_checksum_address(addr)