diff --git a/src/frostfs_testlib/s3/aws_cli_client.py b/src/frostfs_testlib/s3/aws_cli_client.py
index a373dfb..01fb183 100644
--- a/src/frostfs_testlib/s3/aws_cli_client.py
+++ b/src/frostfs_testlib/s3/aws_cli_client.py
@@ -1308,16 +1308,14 @@ class AwsCliClient(S3ClientWrapper):
         return response
 
     @reporter.step("Lists the MFA devices for an IAM user")
-    def iam_list_virtual_mfa_devices(self, user_name: Optional[str] = None) -> dict:
+    def iam_list_virtual_mfa_devices(self) -> dict:
         cmd = f"aws {self.common_flags} iam list-virtual-mfa-devices --endpoint {self.iam_endpoint}"
-        if user_name:
-            cmd += f" --user-name {user_name}"
         if self.profile:
             cmd += f" --profile {self.profile}"
 
         output = self.local_shell.exec(cmd).stdout
         response = self._to_json(output)
-        assert response.get("MFADevices"), f"Expected MFADevices in response:\n{response}"
+        assert response.get("VirtualMFADevices"), f"Expected VirtualMFADevices in response:\n{response}"
 
         return response
 
diff --git a/src/frostfs_testlib/s3/boto3_client.py b/src/frostfs_testlib/s3/boto3_client.py
index b5f9aac..74e9ecd 100644
--- a/src/frostfs_testlib/s3/boto3_client.py
+++ b/src/frostfs_testlib/s3/boto3_client.py
@@ -976,9 +976,9 @@ class Boto3ClientWrapper(S3ClientWrapper):
         return response
 
     @reporter.step("Lists the MFA devices for an IAM user")
-    def iam_list_virtual_mfa_devices(self, user_name: Optional[str] = None) -> dict:
-        response = self.boto3_iam_client.list_virtual_mfa_devices(UserName="/")
-        assert response.get("MFADevices"), f"Expected MFADevices in response:\n{response}"
+    def iam_list_virtual_mfa_devices(self) -> dict:
+        response = self.boto3_iam_client.list_virtual_mfa_devices()
+        assert response.get("VirtualMFADevices"), f"Expected VirtualMFADevices in response:\n{response}"
 
         return response
 
diff --git a/src/frostfs_testlib/s3/interfaces.py b/src/frostfs_testlib/s3/interfaces.py
index 8a62527..b430b9e 100644
--- a/src/frostfs_testlib/s3/interfaces.py
+++ b/src/frostfs_testlib/s3/interfaces.py
@@ -583,7 +583,7 @@ class S3ClientWrapper(HumanReadableABC):
         """Enables the specified MFA device and associates it with the specified IAM user"""
 
     @abstractmethod
-    def iam_list_virtual_mfa_devices(self, user_name: Optional[str] = None) -> dict:
+    def iam_list_virtual_mfa_devices(self) -> dict:
         """Lists the MFA devices for an IAM user"""
 
     @abstractmethod