diff --git a/test/test_option_owner.py b/test/test_option_owner.py
index bc96285..b758e91 100644
--- a/test/test_option_owner.py
+++ b/test/test_option_owner.py
@@ -5,7 +5,7 @@ from tiramisu.setting import owners
 from tiramisu.config import Config
 from tiramisu.option import ChoiceOption, BoolOption, IntOption, FloatOption, \
     StrOption, OptionDescription
-from tiramisu.error import ConfigError
+from tiramisu.error import ConfigError, ConstError
 
 
 def make_description():
@@ -52,6 +52,17 @@ def test_addowner():
     assert cfg.getowner(gcdummy) == owners.gen_config
 
 
+def test_addowner_multiple_time():
+    owners.addowner("testowner")
+    raises(ConstError, 'owners.addowner("testowner")')
+
+
+def test_delete_owner():
+    owners.addowner('deleted')
+    raises(ConstError, 'del(owners.deleted)')
+    raises(ValueError, 'del(owners.deleted2)')
+
+
 def test_owner_is_not_a_string():
     gcdummy = BoolOption('dummy', 'dummy', default=False)
     descr = OptionDescription('tiramisu', '', [gcdummy])
diff --git a/test/test_permissive.py b/test/test_permissive.py
index 38a8bcf..20e6535 100644
--- a/test/test_permissive.py
+++ b/test/test_permissive.py
@@ -9,7 +9,8 @@ from tiramisu.error import PropertiesOptionError
 
 def make_description():
     u1 = IntOption('u1', '', properties=('frozen', 'mandatory', 'disabled', ))
-    return OptionDescription('od1', '', [u1])
+    u2 = IntOption('u2', '', properties=('frozen', 'mandatory', 'disabled', ))
+    return OptionDescription('od1', '', [u1, u2])
 
 
 def test_permissive():
@@ -91,3 +92,116 @@ def test_invalid_permissive():
     setting = config.cfgimpl_get_settings()
     config.read_write()
     raises(TypeError, "setting.setpermissive(['frozen', 'disabled',])")
+
+
+def test_permissive_option():
+    descr = make_description()
+    u1 = descr.u1
+    config = Config(descr)
+    setting = config.cfgimpl_get_settings()
+    config.read_write()
+
+    props = []
+    try:
+        config.u1
+    except PropertiesOptionError as err:
+        props = err.proptype
+    assert props == ['disabled']
+    props = []
+    try:
+        config.u2
+    except PropertiesOptionError as err:
+        props = err.proptype
+    assert props == ['disabled']
+
+    setting.setpermissive(('disabled',), u1)
+    props = []
+    try:
+        config.u1
+    except PropertiesOptionError as err:
+        props = err.proptype
+    assert props == ['disabled']
+    props = []
+    try:
+        config.u2
+    except PropertiesOptionError as err:
+        props = err.proptype
+    assert props == ['disabled']
+
+    setting.append('permissive')
+    config.u1
+    props = []
+    try:
+        config.u2
+    except PropertiesOptionError as err:
+        props = err.proptype
+    assert props == ['disabled']
+
+    setting.remove('permissive')
+    props = []
+    try:
+        config.u1
+    except PropertiesOptionError as err:
+        props = err.proptype
+    assert props == ['disabled']
+    props = []
+    try:
+        config.u2
+    except PropertiesOptionError as err:
+        props = err.proptype
+    assert props == ['disabled']
+
+
+def test_permissive_option_mandatory():
+    descr = make_description()
+    u1 = descr.u1
+    config = Config(descr)
+    setting = config.cfgimpl_get_settings()
+    config.read_only()
+    props = []
+    try:
+        config.u1
+    except PropertiesOptionError as err:
+        props = err.proptype
+    assert set(props) == set(['disabled', 'mandatory'])
+    setting.setpermissive(('mandatory', 'disabled',), u1)
+    setting.append('permissive')
+    config.u1
+    setting.remove('permissive')
+    try:
+        config.u1
+    except PropertiesOptionError as err:
+        props = err.proptype
+    assert set(props) == set(['disabled', 'mandatory'])
+
+
+def test_permissive_option_frozen():
+    descr = make_description()
+    config = Config(descr)
+    u1 = descr.u1
+    setting = config.cfgimpl_get_settings()
+    config.read_write()
+    setting.setpermissive(('frozen', 'disabled'), u1)
+    try:
+        config.u1 = 1
+    except PropertiesOptionError as err:
+        props = err.proptype
+    assert set(props) == set(['frozen', 'disabled'])
+    setting.append('permissive')
+    config.u1 = 1
+    assert config.u1 == 1
+    setting.remove('permissive')
+    try:
+        config.u1 = 1
+    except PropertiesOptionError as err:
+        props = err.proptype
+    assert set(props) == set(['frozen', 'disabled'])
+
+
+def test_invalid_option_permissive():
+    descr = make_description()
+    u1 = descr.u1
+    config = Config(descr)
+    setting = config.cfgimpl_get_settings()
+    config.read_write()
+    raises(TypeError, "setting.setpermissive(['frozen', 'disabled',], u1)")
diff --git a/tiramisu/autolib.py b/tiramisu/autolib.py
index a176c8d..ffdbb0a 100644
--- a/tiramisu/autolib.py
+++ b/tiramisu/autolib.py
@@ -243,5 +243,4 @@ def calculate(callback, args, kwargs):
     :param kwargs: in the callback's arity, the named parameters
 
     """
-    print args, kwargs, callback(*args, **kwargs)
     return callback(*args, **kwargs)
diff --git a/tiramisu/setting.py b/tiramisu/setting.py
index 684ec74..e8feae5 100644
--- a/tiramisu/setting.py
+++ b/tiramisu/setting.py
@@ -406,10 +406,11 @@ class Settings(object):
         """
         # opt properties
         properties = copy(self._getproperties(opt_or_descr, path))
-        # remove opt permissive
-        properties -= self._p_.getpermissive(path)
-        # remove global permissive if need
         self_properties = copy(self._getproperties())
+        # remove opt permissive
+        if force_permissive is True or 'permissive' in self_properties:
+            properties -= self._p_.getpermissive(path)
+        # remove global permissive if need
         if force_permissive is True or 'permissive' in self_properties:
             properties -= self._p_.getpermissive()
         if force_permissives is not None: