diff --git a/integration_tests/test_e2ee.py b/integration_tests/test_e2ee.py
index ebe6a3dcae..ca560e56ac 100644
--- a/integration_tests/test_e2ee.py
+++ b/integration_tests/test_e2ee.py
@@ -1,12 +1,31 @@
-from .utils import prepare_cipherfile
-
-
 def test_encrypt_decrypt(cronos):
-    cli = cronos.cosmos_cli()
+    cli0 = cronos.cosmos_cli()
     cli1 = cronos.cosmos_cli(1)
+
+    # gen two keys for two accounts
     name0 = "key0"
     name1 = "key1"
+    pubkey0 = cli0.keygen(keyring_name=name0)
+    pubkey1 = cli1.keygen(keyring_name=name1)
+    sender = "validator"
+    cli0.register_e2ee_key(pubkey0, _from=sender)
+    cli1.register_e2ee_key(pubkey1, _from=sender)
+    # query in batch
+    assert cli0.query_e2ee_keys(cli0.address(sender), cli1.address(sender)) == [
+        pubkey0,
+        pubkey1,
+    ]
+    # prepare data file to encrypt
     content = "Hello World!"
-    cipherfile = prepare_cipherfile(cli, cli1, name0, name1, content)
-    assert cli.decrypt(cipherfile, identity=name0) == content
-    assert cli1.decrypt(cipherfile, identity=name1) == content
+    plainfile = cli0.data_dir / "plaintext"
+    plainfile.write_text(content)
+    cipherfile = cli0.data_dir / "ciphertext"
+    cli0.encrypt(
+        plainfile,
+        cli0.address(sender),
+        cli1.address(sender),
+        output=cipherfile,
+    )
+
+    assert cli0.decrypt(cipherfile, identity="key0") == content
+    assert cli1.decrypt(cipherfile, identity="key1") == content
diff --git a/integration_tests/test_gov_update_params.py b/integration_tests/test_gov_update_params.py
index 69f3f41d41..dcc56d4121 100644
--- a/integration_tests/test_gov_update_params.py
+++ b/integration_tests/test_gov_update_params.py
@@ -9,7 +9,6 @@
     approve_proposal,
     deploy_contract,
     eth_to_bech32,
-    prepare_cipherfile,
     wait_for_new_blocks,
     wait_for_port,
 )
@@ -96,18 +95,31 @@ def test_gov_update_params(cronos, tmp_path):
     print("params", rsp)
     assert rsp == params
 
-    # gen two keys for two accounts
+    # gen identity key for one account
     name = "e2ee-identity"
-    cli1 = cronos.cosmos_cli(1)
     addr = cli.address("user")
     content = json.dumps({"addresses": [addr]})
-    cipherfile = prepare_cipherfile(cli, cli1, name, name, content)
-    cronos.supervisorctl("stop", "all")
-    cronos.supervisorctl("start", "cronos_777-1-node0", "cronos_777-1-node1")
+    pubkey0 = cli.keygen(keyring_name=name)
+    sender = "validator"
+    cli.register_e2ee_key(pubkey0, _from=sender)
+    assert cli.query_e2ee_key(cli.address(sender)) == pubkey0
+    # prepare data file to encrypt
+    plainfile = cli.data_dir / "plaintext"
+    plainfile.write_text(content)
+    cipherfile = cli.data_dir / "ciphertext"
+    cli.encrypt(
+        plainfile,
+        cli.address(sender),
+        output=cipherfile,
+    )
+    cronos.supervisorctl("stop", "cronos_777-1-node0")
+    cronos.supervisorctl("start", "cronos_777-1-node0")
     wait_for_port(ports.evmrpc_port(cronos.base_port(0)))
     rsp = cli.store_blocklist(cipherfile, from_="validator")
     assert rsp["code"] == 0, rsp["raw_log"]
     wait_for_new_blocks(cli, 2)
-    rsp = cli.transfer(addr, cli.address("validator"), "1basetcro")
-    assert rsp["code"] != 0
-    assert "signer is blocked" in rsp["raw_log"]
+    with pytest.raises(AssertionError):
+        rsp = cli.transfer(addr, cli.address("validator"), "1basetcro")
+    cli1 = cronos.cosmos_cli(1)
+    rsp = cli1.transfer(cli1.address("validator"), cli1.address("validator"), "1basetcro")
+    assert rsp["code"] == 0, rsp["raw_log"]
\ No newline at end of file
diff --git a/integration_tests/utils.py b/integration_tests/utils.py
index fd9cfb933b..323207d83e 100644
--- a/integration_tests/utils.py
+++ b/integration_tests/utils.py
@@ -732,28 +732,3 @@ def get_send_enable(port):
     url = f"http://127.0.0.1:{port}/cosmos/bank/v1beta1/params"
     raw = requests.get(url).json()
     return raw["params"]["send_enabled"]
-
-
-def prepare_cipherfile(cli0, cli1, name0, name1, content):
-    # gen two keys for two accounts
-    pubkey0 = cli0.keygen(keyring_name=name0)
-    pubkey1 = cli1.keygen(keyring_name=name1)
-    sender = "validator"
-    cli0.register_e2ee_key(pubkey0, _from=sender)
-    cli1.register_e2ee_key(pubkey1, _from=sender)
-    # query in batch
-    assert cli0.query_e2ee_keys(cli0.address(sender), cli1.address(sender)) == [
-        pubkey0,
-        pubkey1,
-    ]
-    # prepare data file to encrypt
-    plainfile = cli0.data_dir / "plaintext"
-    plainfile.write_text(content)
-    cipherfile = cli0.data_dir / "ciphertext"
-    cli0.encrypt(
-        plainfile,
-        cli0.address(sender),
-        cli1.address(sender),
-        output=cipherfile,
-    )
-    return cipherfile