diff --git a/splitgpg2/__init__.py b/splitgpg2/__init__.py
index 0305925..7403786 100755
--- a/splitgpg2/__init__.py
+++ b/splitgpg2/__init__.py
@@ -569,6 +569,7 @@ def default_commands(self) -> Dict[bytes, 'NoneCallback']:
     @staticmethod
     def default_options() -> Dict[bytes, Tuple[OptionHandlingType, Optional[bytes]]]:
         return {
+            b'xauthority': (OptionHandlingType.fake, b'OK'),
             b'ttyname': (OptionHandlingType.fake, b'OK'),
             b'ttytype': (OptionHandlingType.fake, b'OK'),
             b'display': (OptionHandlingType.fake, b'OK'),
diff --git a/splitgpg2/test_server.py b/splitgpg2/test_server.py
index 517c542..7893a9e 100644
--- a/splitgpg2/test_server.py
+++ b/splitgpg2/test_server.py
@@ -590,6 +590,17 @@ async def go() -> None:
             await writer.wait_closed()
         self.loop.run_until_complete(go())
 
+    def test_014_option_xauthority_allowed(self) -> None:
+        async def go() -> None:
+            reader, writer = await asyncio.open_unix_connection(self.socket_path)
+            self.assertEqual((await reader.readline()).rstrip(b'\n').split(b' ')[0], b'OK')
+            writer.write(b'OPTION xauthority=/run/flatpak/Xauthority\n')
+            self.assertEqual(await reader.readline(), b'OK\n')
+            writer.close()
+            await writer.wait_closed()
+        self.loop.run_until_complete(go())
+
+
 class TC_Config(TestCase):
     key_uid = 'user@localhost'