diff --git a/apps/cic-eth/cic_eth/eth/gas.py b/apps/cic-eth/cic_eth/eth/gas.py
index 40f569af..7e32bf04 100644
--- a/apps/cic-eth/cic_eth/eth/gas.py
+++ b/apps/cic-eth/cic_eth/eth/gas.py
@@ -9,7 +9,10 @@ from hexathon import (
         )
 #from chainlib.eth.constant import ZERO_ADDRESS
 from chainlib.chain import ChainSpec
-from chainlib.eth.address import is_checksum_address
+from chainlib.eth.address import (
+        is_checksum_address,
+        to_checksum_address,
+        )
 from chainlib.connection import RPCConnection
 from chainqueue.db.enum import StatusBits
 from chainqueue.sql.tx import cache_tx_dict
@@ -179,6 +182,7 @@ def check_gas(self, tx_hashes_hex, chain_spec_dict, txs_hex=[], address=None, ga
     :return: Signed raw transaction data list
     :rtype: param txs, unchanged
     """
+    rpc_format_address = None
     if address != None:
         if not is_checksum_address(address):
             raise ValueError('invalid address {}'.format(address))
@@ -195,7 +199,6 @@ def check_gas(self, tx_hashes_hex, chain_spec_dict, txs_hex=[], address=None, ga
         txs.append(tx)
 
     chain_spec = ChainSpec.from_dict(chain_spec_dict)
-    logg.debug('txs {} tx_hashes {}'.format(txs, tx_hashes))
 
     addresspass = None
     if len(txs) == 0:
@@ -211,13 +214,15 @@ def check_gas(self, tx_hashes_hex, chain_spec_dict, txs_hex=[], address=None, ga
                 raise ValueError('txs passed to check gas must all have same sender; had {} got {}'.format(address, tx['from']))
             addresspass.append(address)
 
+    rpc_format_address = add_0x(to_checksum_address(address))
+
     queue = self.request.delivery_info.get('routing_key')
 
     conn = RPCConnection.connect(chain_spec)
 
     gas_balance = 0
     try:
-        o = balance(address)
+        o = balance(rpc_format_address)
         r = conn.do(o)
         conn.disconnect()
         gas_balance = abi_decode_single(ABIContractType.UINT256, r)
diff --git a/apps/cic-eth/tests/filters/test_callback_filter.py b/apps/cic-eth/tests/filters/test_callback_filter.py
index 79168ae5..4b99de12 100644
--- a/apps/cic-eth/tests/filters/test_callback_filter.py
+++ b/apps/cic-eth/tests/filters/test_callback_filter.py
@@ -225,4 +225,4 @@ def test_callback_filter_filter(
     fltr.filter(eth_rpc, mockblock, tx, init_database)
 
     assert mock.results.get('transfer') != None
-    assert mock.results['transfer']['destination_token'] == foo_token
+    assert mock.results['transfer']['destination_token'] == strip_0x(foo_token)
diff --git a/apps/cic-eth/tests/filters/test_transferauth_filter.py b/apps/cic-eth/tests/filters/test_transferauth_filter.py
index 850640a9..ac84139a 100644
--- a/apps/cic-eth/tests/filters/test_transferauth_filter.py
+++ b/apps/cic-eth/tests/filters/test_transferauth_filter.py
@@ -78,4 +78,4 @@ def test_filter_transferauth(
 
     c = ERC20(default_chain_spec)
     approve = c.parse_approve_request(approve_tx['data']) 
-    assert approve[0] == agent_roles['BOB']
+    assert approve[0] == strip_0x(agent_roles['BOB'])