diff --git a/src/dbus_fast/_private/unmarshaller.pxd b/src/dbus_fast/_private/unmarshaller.pxd
index 7539015b..0a2942de 100644
--- a/src/dbus_fast/_private/unmarshaller.pxd
+++ b/src/dbus_fast/_private/unmarshaller.pxd
@@ -11,6 +11,7 @@ cdef object ARRAY
 cdef object UNIX_FDS_CMSG_LENGTH
 cdef object SOL_SOCKET
 cdef object SCM_RIGHTS
+cdef object MESSAGE_FLAG_INTENUM
 
 cdef unsigned int UINT32_SIZE
 cdef unsigned int INT16_SIZE
@@ -112,8 +113,8 @@ cdef class Unmarshaller:
     cdef unsigned int _body_len
     cdef unsigned int _serial
     cdef unsigned int _header_len
-    cdef unsigned int _message_type
-    cdef unsigned int _flag
+    cdef object _message_type
+    cdef object _flag
     cdef unsigned int _msg_len
     cdef unsigned int _is_native
     cdef object _uint32_unpack
diff --git a/src/dbus_fast/_private/unmarshaller.py b/src/dbus_fast/_private/unmarshaller.py
index a3626c7b..2c12e97b 100644
--- a/src/dbus_fast/_private/unmarshaller.py
+++ b/src/dbus_fast/_private/unmarshaller.py
@@ -6,12 +6,14 @@
 from struct import Struct
 from typing import Any, Callable, Dict, Iterable, List, Optional, Tuple, Union
 
-from ..constants import MESSAGE_FLAG_MAP, MESSAGE_TYPE_MAP
+from ..constants import MESSAGE_FLAG_MAP, MESSAGE_TYPE_MAP, MessageFlag
 from ..errors import InvalidMessageError
 from ..message import Message
 from ..signature import SignatureType, Variant, get_signature_tree
 from .constants import BIG_ENDIAN, LITTLE_ENDIAN, PROTOCOL_VERSION
 
+MESSAGE_FLAG_INTENUM = MessageFlag
+
 MAX_UNIX_FDS = 16
 MAX_UNIX_FDS_SIZE = array.array("i").itemsize
 UNIX_FDS_CMSG_LENGTH = socket.CMSG_LEN(MAX_UNIX_FDS_SIZE)
@@ -702,9 +704,12 @@ def _read_body(self) -> None:
             tree = get_signature_tree(signature)
             body = [self._readers[t.token](self, t) for t in tree.types]
 
+        flags = MESSAGE_FLAG_MAP.get(self._flag)
+        if flags is None:
+            flags = MESSAGE_FLAG_INTENUM(self._flag)
         self._message = Message(
             message_type=MESSAGE_TYPE_MAP[self._message_type],
-            flags=MESSAGE_FLAG_MAP[self._flag],
+            flags=flags,
             unix_fds=self._unix_fds,
             signature=tree,
             body=body,
diff --git a/tests/test_aio_multi_flags.py b/tests/test_aio_multi_flags.py
index ddc3f2fd..c332a9af 100644
--- a/tests/test_aio_multi_flags.py
+++ b/tests/test_aio_multi_flags.py
@@ -1,13 +1,9 @@
-import asyncio
-
 import pytest
 
-from dbus_fast import Message, MessageFlag, MessageType
 from dbus_fast.aio import MessageBus
 from dbus_fast.service import ServiceInterface, method
 
 
-@pytest.mark.xfail
 @pytest.mark.asyncio
 async def test_multiple_flags_in_message():
     class ExampleInterface(ServiceInterface):
@@ -22,4 +18,5 @@ def Echo(self, what: "s") -> "s":  # noqa: F821
     interface = ExampleInterface("test.interface")
     bus.export("/test/path", interface)
     await bus.request_name("test.name")
+    bus.disconnect()
     await bus.wait_for_disconnect()