diff --git a/pytest_tests/testsuites/object/test_object_lock.py b/pytest_tests/testsuites/object/test_object_lock.py
index a6e8c58..d1fc3eb 100755
--- a/pytest_tests/testsuites/object/test_object_lock.py
+++ b/pytest_tests/testsuites/object/test_object_lock.py
@@ -42,7 +42,7 @@ FIXTURE_OBJECT_LIFETIME = 10
 @pytest.fixture(scope="module")
 def user_wallet(credentials_provider: CredentialsProvider, cluster: Cluster) -> WalletInfo:
     with reporter.step("Create user wallet with container"):
-        user = User(string_utils.unique_name("user_"))
+        user = User(string_utils.unique_name("user-"))
         return credentials_provider.GRPC.provide(user, cluster.cluster_nodes[0])
 
 
diff --git a/pytest_tests/testsuites/session_token/conftest.py b/pytest_tests/testsuites/session_token/conftest.py
index cea75aa..eabd68b 100644
--- a/pytest_tests/testsuites/session_token/conftest.py
+++ b/pytest_tests/testsuites/session_token/conftest.py
@@ -14,12 +14,12 @@ def owner_wallet(default_wallet: WalletInfo) -> WalletInfo:
 @pytest.fixture(scope="module")
 def user_wallet(credentials_provider: CredentialsProvider, cluster: Cluster) -> WalletInfo:
     with reporter.step("Create user wallet which will use objects from owner via static session"):
-        user = User(string_utils.unique_name("user_"))
+        user = User(string_utils.unique_name("user-"))
         return credentials_provider.GRPC.provide(user, cluster.cluster_nodes[0])
 
 
 @pytest.fixture(scope="module")
 def stranger_wallet(credentials_provider: CredentialsProvider, cluster: Cluster) -> WalletInfo:
     with reporter.step("Create stranger user wallet which should fail to obtain data"):
-        user = User(string_utils.unique_name("user_"))
+        user = User(string_utils.unique_name("user-"))
         return credentials_provider.GRPC.provide(user, cluster.cluster_nodes[0])