diff --git a/miio/tests/test_vacuum.py b/miio/tests/test_vacuum.py
index 256dd0470..0bb0a1fe9 100644
--- a/miio/tests/test_vacuum.py
+++ b/miio/tests/test_vacuum.py
@@ -1,5 +1,6 @@
 import datetime
 from unittest import TestCase
+from unittest.mock import patch
 
 import pytest
 
@@ -152,62 +153,18 @@ def test_zoned_clean(self):
         )
         assert self.status().state_code == self.device.STATE_ZONED_CLEAN
 
-    @pytest.mark.xfail
-    def test_manual_control(self):
-        self.fail()
-
-    @pytest.mark.skip("unknown handling")
-    def test_log_upload(self):
-        self.fail()
-
-    @pytest.mark.xfail
-    def test_consumable_status(self):
-        self.fail()
-
-    @pytest.mark.skip("consumable reset is not implemented")
-    def test_consumable_reset(self):
-        self.fail()
-
-    @pytest.mark.xfail
-    def test_map(self):
-        self.fail()
-
-    @pytest.mark.xfail
-    def test_clean_history(self):
-        self.fail()
-
-    @pytest.mark.xfail
-    def test_clean_details(self):
-        self.fail()
-
-    @pytest.mark.skip("hard to test")
-    def test_find(self):
-        self.fail()
-
-    @pytest.mark.xfail
-    def test_timer(self):
-        self.fail()
-
-    @pytest.mark.xfail
-    def test_dnd(self):
-        self.fail()
-
-    @pytest.mark.xfail
-    def test_fan_speed(self):
-        self.fail()
-
-    @pytest.mark.xfail
-    def test_sound_info(self):
-        self.fail()
-
-    @pytest.mark.xfail
-    def test_serial_number(self):
-        self.fail()
-
-    @pytest.mark.xfail
     def test_timezone(self):
-        self.fail()
-
-    @pytest.mark.xfail
-    def test_raw_command(self):
-        self.fail()
+        with patch.object(
+            self.device,
+            "send",
+            return_value=[
+                {"olson": "Europe/Berlin", "posix": "CET-1CEST,M3.5.0,M10.5.0/3"}
+            ],
+        ):
+            assert self.device.timezone() == "Europe/Berlin"
+
+        with patch.object(self.device, "send", return_value=["Europe/Berlin"]):
+            assert self.device.timezone() == "Europe/Berlin"
+
+        with patch.object(self.device, "send", return_value=[0]):
+            assert self.device.timezone() == "UTC"
diff --git a/miio/vacuum.py b/miio/vacuum.py
index 14e127e27..810fa2d8d 100644
--- a/miio/vacuum.py
+++ b/miio/vacuum.py
@@ -599,11 +599,21 @@ def locale(self):
     def timezone(self):
         """Get the timezone."""
         res = self.send("get_timezone")[0]
+
+        def _fallback_timezone(data):
+            fallback = "UTC"
+            _LOGGER.error(
+                "Unsupported timezone format (%s), falling back to %s", data, fallback
+            )
+            return fallback
+
+        if isinstance(res, int):
+            return _fallback_timezone(res)
         if isinstance(res, dict):
             # Xiaowa E25 example
             # {'olson': 'Europe/Berlin', 'posix': 'CET-1CEST,M3.5.0,M10.5.0/3'}
             if "olson" not in res:
-                raise VacuumException("Unsupported timezone format: %s" % res)
+                return _fallback_timezone(res)
 
             return res["olson"]