diff --git a/tests/test_requires.py b/tests/test_requires.py
index 47aa8b8..5df470a 100644
--- a/tests/test_requires.py
+++ b/tests/test_requires.py
@@ -1070,6 +1070,38 @@ async def test_requires_different_inverse_unicode(config_type):
     assert not await list_sessions()
 
 
+@pytest.mark.asyncio
+async def test_requires_different_inverse_unicode2(config_type):
+    a = BoolOption('activate_service', '', False)
+    d = StrOption('activate_other_service', '', 'val2')
+    disabled_property = Calculation(calc_value,
+                                    Params(ParamValue('disabled'),
+                                           kwargs={'condition_0': ParamOption(a),
+                                                   'condition_1': ParamOption(d),
+                                                   'expected_0': ParamValue(True),
+                                                   'expected_1': ParamValue(['val2', 'val3']),
+                                                   'condition_operator': ParamValue('OR'),
+                                                   'reverse_condition_1': ParamValue(True)}))
+    b = IPOption('ip_address_service', '', properties=(disabled_property,))
+    od = OptionDescription('service', '', [a, d, b])
+    async with await Config(od) as cfg:
+        await cfg.property.read_write()
+        cfg = await get_config(cfg, config_type)
+        assert await cfg.option('ip_address_service').value.get() == None
+        await cfg.option('activate_service').value.set(True)
+        with pytest.raises(PropertiesOptionError):
+            await cfg.option('ip_address_service').value.get()
+        await cfg.option('activate_service').value.set(False)
+        assert await cfg.option('ip_address_service').value.get() == None
+        await cfg.option('activate_other_service').value.set('val1')
+        with pytest.raises(PropertiesOptionError):
+            await cfg.option('ip_address_service').value.get()
+        await cfg.option('activate_service').value.set(True)
+        with pytest.raises(PropertiesOptionError):
+            await cfg.option('ip_address_service').value.get()
+    assert not await list_sessions()
+
+
 @pytest.mark.asyncio
 async def test_optiondescription_requires():
     a = BoolOption('activate_service', '', True)
diff --git a/tiramisu/autolib.py b/tiramisu/autolib.py
index cfbdb14..71ebf43 100644
--- a/tiramisu/autolib.py
+++ b/tiramisu/autolib.py
@@ -501,5 +501,4 @@ async def calculate(option,
                 '').format(str(error),
                            callback.__name__,
                            option.impl_get_display_name())
-    del error
-    raise ConfigError(msg)
+    raise ConfigError(msg) from error
diff --git a/tiramisu/function.py b/tiramisu/function.py
index 1779bcb..0cd037f 100644
--- a/tiramisu/function.py
+++ b/tiramisu/function.py
@@ -400,7 +400,10 @@ class CalcValue:
             for idx, calculated_condition in calculated_conditions.items():
                 if isinstance(calculated_expected, dict):
                     if idx is not None:
-                        current_matches = calculated_condition == calculated_expected[idx]
+                        if isinstance(calculated_expected[idx], list):
+                            current_matches = calculated_condition in calculated_expected[idx]
+                        else:
+                            current_matches = calculated_condition == calculated_expected[idx]
                     else:
                         current_matches = calculated_condition in calculated_expected.values()
                 else: