diff --git a/src/frostfs_testlib/credentials/authmate_s3_provider.py b/src/frostfs_testlib/credentials/authmate_s3_provider.py
index 6343b5a..66c5015 100644
--- a/src/frostfs_testlib/credentials/authmate_s3_provider.py
+++ b/src/frostfs_testlib/credentials/authmate_s3_provider.py
@@ -22,7 +22,7 @@ class AuthmateS3CredentialsProvider(S3CredentialsProvider):
 
         gate_public_keys = [node.service(S3Gate).get_wallet_public_key() for node in cluster_nodes]
         # unique short bucket name
-        bucket = f"bucket_{hex(int(datetime.now().timestamp()*1000000))}"
+        bucket = f"bucket-{hex(int(datetime.now().timestamp()*1000000))}"
 
         frostfs_authmate: FrostfsAuthmate = FrostfsAuthmate(shell, FROSTFS_AUTHMATE_EXEC)
         issue_secret_output = frostfs_authmate.secret.issue(
@@ -40,7 +40,7 @@ class AuthmateS3CredentialsProvider(S3CredentialsProvider):
         )
         cid = str(re.search(r"container_id.*:\s.(?P<container_id>\w*)", issue_secret_output).group("container_id"))
 
-        containers_list = list_containers(wallet.path, shell, endpoint)
+        containers_list = list_containers(wallet, shell, endpoint)
         assert cid in containers_list, f"Expected cid {cid} in {containers_list}"
 
         user.s3_credentials = S3Credentials(aws_access_key_id, aws_secret_access_key)