diff --git a/tests/test_leadership.py b/tests/test_leadership.py
index 25d535d..3f21331 100644
--- a/tests/test_leadership.py
+++ b/tests/test_leadership.py
@@ -331,6 +331,53 @@ prog.py: error: the following arguments are required: --leader.follower_submulti
     assert config.value.dict() == output
 
 
+def test_leadership_modif_mandatory_remove(json):
+    output = {'leader.leader': ['192.168.1.1'],
+              'leader.follower': [None],
+              'leader.follower_mandatory': ['255.255.255.128'],
+              'leader.follower_boolean': [None],
+              'leader.follower_choice': [None],
+              'leader.follower_integer': [None],
+              'leader.follower_submulti': [['255.255.255.128']]}
+    output2 = """usage: prog.py --leader.leader "192.168.1.1" [-h] [--leader.pop-leader INDEX]
+                                             [--leader.follower INDEX [FOLLOWER]]
+                                             --leader.follower_submulti INDEX
+                                             [FOLLOWER_SUBMULTI ...]
+                                             [--leader.follower_integer INDEX [FOLLOWER_INTEGER]]
+                                             [--leader.follower_boolean INDEX]
+                                             [--leader.no-follower_boolean INDEX]
+                                             [--leader.follower_choice INDEX [{opt1,opt2}]]
+                                             --leader.follower_mandatory INDEX
+                                             FOLLOWER_MANDATORY
+prog.py: error: the following arguments are required: --leader.follower_submulti"""
+
+    config = get_config(json, with_mandatory=True)
+    parser = TiramisuCmdlineParser(config, 'prog.py', display_modified_value=False)
+    f = StringIO()
+    with redirect_stderr(f):
+        try:
+            parser.parse_args(['--leader.leader', '192.168.1.1'])
+        except SystemExit as err:
+            assert str(err) == "2"
+        else:
+            raise Exception('must raises')
+    assert f.getvalue() == output2 + ', --leader.follower_mandatory\n'
+    f = StringIO()
+    with redirect_stderr(f):
+        try:
+            parser.parse_args(['--leader.leader', '192.168.1.1',
+                               '--leader.follower_mandatory', '0', '255.255.255.128'])
+        except SystemExit as err:
+            assert str(err) == "2"
+        else:
+            raise Exception('must raises')
+    assert f.getvalue() == output2 + '\n'
+    parser.parse_args(['--leader.leader', '192.168.1.1',
+                       '--leader.follower_submulti', '0', '255.255.255.128',
+                       '--leader.follower_mandatory', '0', '255.255.255.128'])
+    assert config.value.dict() == output
+
+
 def test_leadership_modif_mandatory_unvalidate(json):
     output = {'leader.leader': ['192.168.1.1'],
               'leader.follower': [None],
diff --git a/tests/test_readme.py b/tests/test_readme.py
index e3bb1e4..58848ce 100644
--- a/tests/test_readme.py
+++ b/tests/test_readme.py
@@ -154,6 +154,27 @@ optional arguments:
     assert f.getvalue() == output
 
 
+def test_readme_help_modif_positional_remove(json):
+    output = """usage: prog.py "str" [-h] [-v] [-nv] --str STR
+
+optional arguments:
+  -h, --help           show this help message and exit
+  -v, --verbosity      increase output verbosity
+  -nv, --no-verbosity
+  --str STR            string option
+"""
+    parser = TiramisuCmdlineParser(get_config(json), 'prog.py', display_modified_value=False)
+    f = StringIO()
+    with redirect_stdout(f):
+        try:
+            parser.parse_args(['str', '--help'])
+        except SystemExit as err:
+            assert str(err) == "0"
+        else:
+            raise Exception('must raises')
+    assert f.getvalue() == output
+
+
 def test_readme_help_modif(json):
     output = """usage: prog.py "str" --str "toto" [-h] [-v] [-nv] --str STR
                                   {str,list,int,none}
@@ -179,7 +200,27 @@ optional arguments:
     assert f.getvalue() == output
 
 
-def test_readme_help_modif_short1(json):
+def test_readme_help_modif_remove(json):
+    output = """usage: prog.py "str" --str "toto" [-h] [-v] [-nv]
+
+optional arguments:
+  -h, --help           show this help message and exit
+  -v, --verbosity      increase output verbosity
+  -nv, --no-verbosity
+"""
+    parser = TiramisuCmdlineParser(get_config(json), 'prog.py', display_modified_value=False)
+    f = StringIO()
+    with redirect_stdout(f):
+        try:
+            parser.parse_args(['str', '--str', 'toto', '--help'])
+        except SystemExit as err:
+            assert str(err) == "0"
+        else:
+            raise Exception('must raises')
+    assert f.getvalue() == output
+
+
+def test_readme_help_modif_short(json):
     output = """usage: prog.py "str" -v [-h] [-v] [-nv] --str STR {str,list,int,none}
 
 positional arguments:
@@ -203,6 +244,27 @@ optional arguments:
     assert f.getvalue() == output
 
 
+def test_readme_help_modif_short_remove(json):
+	# FIXME -v -nv ?? pas de description
+    output = """usage: prog.py "str" -v [-h] [-nv] --str STR
+
+optional arguments:
+  -h, --help           show this help message and exit
+  -nv, --no-verbosity
+  --str STR            string option
+"""
+    parser = TiramisuCmdlineParser(get_config(json), 'prog.py', display_modified_value=False)
+    f = StringIO()
+    with redirect_stdout(f):
+        try:
+            parser.parse_args(['str', '-v', '--help'])
+        except SystemExit as err:
+            assert str(err) == "0"
+        else:
+            raise Exception('must raises')
+    assert f.getvalue() == output
+
+
 def test_readme_help_modif_short_no(json):
     output = """usage: prog.py "str" -v [-h] [-v] [-nv] --str STR {str,list,int,none}
 
@@ -227,6 +289,27 @@ optional arguments:
     assert f.getvalue() == output
 
 
+def test_readme_help_modif_short_no_remove(json):
+	# FIXME -v -nv ?? c'est -nv qui est set
+    output = """usage: prog.py "str" -v [-h] [-nv] --str STR
+
+optional arguments:
+  -h, --help           show this help message and exit
+  -nv, --no-verbosity
+  --str STR            string option
+"""
+    parser = TiramisuCmdlineParser(get_config(json), 'prog.py', display_modified_value=False)
+    f = StringIO()
+    with redirect_stdout(f):
+        try:
+            parser.parse_args(['str', '-nv', '--help'])
+        except SystemExit as err:
+            assert str(err) == "0"
+        else:
+            raise Exception('must raises')
+    assert f.getvalue() == output
+
+
 def test_readme_positional_mandatory(json):
     output = """usage: prog.py [-h] [-v] [-nv] {str,list,int,none}
 prog.py: error: the following arguments are required: cmd
@@ -291,6 +374,22 @@ prog.py: error: the following arguments are required: --str
     assert f.getvalue() == output
 
 
+def test_readme_mandatory_remove(json):
+    output = """usage: prog.py "str" [-h] [-v] [-nv] --str STR
+prog.py: error: the following arguments are required: --str
+"""
+    parser = TiramisuCmdlineParser(get_config(json), 'prog.py', display_modified_value=False)
+    f = StringIO()
+    with redirect_stderr(f):
+        try:
+            parser.parse_args(['str'])
+        except SystemExit as err:
+            assert str(err) == "2"
+        else:
+            raise Exception('must raises')
+    assert f.getvalue() == output
+
+
 def test_readme_mandatory_tree(json):
     output = """usage: prog.py "str" [-h] [-v] [-nv] --root.str STR {str,list,int,none}
 prog.py: error: the following arguments are required: --root.str
@@ -307,6 +406,22 @@ prog.py: error: the following arguments are required: --root.str
     assert f.getvalue() == output
 
 
+def test_readme_mandatory_tree_remove(json):
+    output = """usage: prog.py "str" [-h] [-v] [-nv] --root.str STR
+prog.py: error: the following arguments are required: --root.str
+"""
+    parser = TiramisuCmdlineParser(get_config(json, True), 'prog.py', display_modified_value=False)
+    f = StringIO()
+    with redirect_stderr(f):
+        try:
+            parser.parse_args(['str'])
+        except SystemExit as err:
+            assert str(err) == "2"
+        else:
+            raise Exception('must raises')
+    assert f.getvalue() == output
+
+
 def test_readme_mandatory_tree_flatten(json):
     output = """usage: prog.py "str" [-h] [-v] [-nv] --str STR {str,list,int,none}
 prog.py: error: the following arguments are required: --str
@@ -323,6 +438,22 @@ prog.py: error: the following arguments are required: --str
     assert f.getvalue() == output
 
 
+def test_readme_mandatory_tree_flatten_remove(json):
+    output = """usage: prog.py "str" [-h] [-v] [-nv] --str STR
+prog.py: error: the following arguments are required: --str
+"""
+    parser = TiramisuCmdlineParser(get_config(json, True), 'prog.py', fullpath=False, display_modified_value=False)
+    f = StringIO()
+    with redirect_stderr(f):
+        try:
+            parser.parse_args(['str'])
+        except SystemExit as err:
+            assert str(err) == "2"
+        else:
+            raise Exception('must raises')
+    assert f.getvalue() == output
+
+
 def test_readme_cross(json):
     output = """usage: prog.py "none" [-h] [-v] [-nv] {str,list,int,none}
 prog.py: error: unrecognized arguments: --int
@@ -339,6 +470,22 @@ prog.py: error: unrecognized arguments: --int
     assert f.getvalue() == output
 
 
+def test_readme_cross_remove(json):
+    output = """usage: prog.py "none" [-h] [-v] [-nv]
+prog.py: error: unrecognized arguments: --int
+"""
+    parser = TiramisuCmdlineParser(get_config(json), 'prog.py', display_modified_value=False)
+    f = StringIO()
+    with redirect_stderr(f):
+        try:
+            parser.parse_args(['none', '--int'])
+        except SystemExit as err:
+            assert str(err) == "2"
+        else:
+            raise Exception('must raises')
+    assert f.getvalue() == output
+
+
 def test_readme_cross_tree(json):
     output = """usage: prog.py "none" [-h] [-v] [-nv] {str,list,int,none}
 prog.py: error: unrecognized arguments: --int
@@ -355,6 +502,22 @@ prog.py: error: unrecognized arguments: --int
     assert f.getvalue() == output
 
 
+def test_readme_cross_tree_remove(json):
+    output = """usage: prog.py "none" [-h] [-v] [-nv]
+prog.py: error: unrecognized arguments: --int
+"""
+    parser = TiramisuCmdlineParser(get_config(json, True), 'prog.py', display_modified_value=False)
+    f = StringIO()
+    with redirect_stderr(f):
+        try:
+            parser.parse_args(['none', '--int'])
+        except SystemExit as err:
+            assert str(err) == "2"
+        else:
+            raise Exception('must raises')
+    assert f.getvalue() == output
+
+
 def test_readme_cross_tree_flatten(json):
     output = """usage: prog.py "none" [-h] [-v] [-nv] {str,list,int,none}
 prog.py: error: unrecognized arguments: --int
@@ -371,6 +534,22 @@ prog.py: error: unrecognized arguments: --int
     assert f.getvalue() == output
 
 
+def test_readme_cross_tree_flatten_remove(json):
+    output = """usage: prog.py "none" [-h] [-v] [-nv]
+prog.py: error: unrecognized arguments: --int
+"""
+    parser = TiramisuCmdlineParser(get_config(json, True), 'prog.py', fullpath=False, display_modified_value=False)
+    f = StringIO()
+    with redirect_stderr(f):
+        try:
+            parser.parse_args(['none', '--int'])
+        except SystemExit as err:
+            assert str(err) == "2"
+        else:
+            raise Exception('must raises')
+    assert f.getvalue() == output
+
+
 def test_readme_unknown(json):
     output = """usage: prog.py [-h] [-v] [-nv] {str,list,int,none}
 prog.py: error: argument root.cmd: invalid choice: 'unknown' (choose from 'str', 'list', 'int', 'none')
diff --git a/tiramisu_cmdline_parser/api.py b/tiramisu_cmdline_parser/api.py
index 1ee08c1..4bbe00c 100644
--- a/tiramisu_cmdline_parser/api.py
+++ b/tiramisu_cmdline_parser/api.py
@@ -223,6 +223,7 @@ class TiramisuCmdlineParser(ArgumentParser):
                  root: str=None,
                  fullpath: bool=True,
                  remove_empty_od: bool=False,
+                 display_modified_value: bool=True,
                  formatter_class=HelpFormatter,
                  _forhelp: bool=False,
                  **kwargs):
@@ -230,6 +231,7 @@ class TiramisuCmdlineParser(ArgumentParser):
         self.config = config
         self.root = root
         self.remove_empty_od = remove_empty_od
+        self.display_modified_value = display_modified_value
         if TiramisuHelpFormatter not in formatter_class.__mro__:
             formatter_class = type('TiramisuHelpFormatter', (TiramisuHelpFormatter, formatter_class), {})
         formatter_class.remove_empty_od = self.remove_empty_od
@@ -287,6 +289,7 @@ class TiramisuCmdlineParser(ArgumentParser):
                                                self.prog,
                                                root=self.root,
                                                remove_empty_od=self.remove_empty_od,
+                                               display_modified_value=self.display_modified_value,
                                                formatter_class=self.formatter_class,
                                                epilog=self.epilog,
                                                description=self.description,
@@ -407,6 +410,8 @@ class TiramisuCmdlineParser(ArgumentParser):
                                                          'type': option.type(),
                                                          'name': name,
                                                          'value': value}
+                if not self.display_modified_value:
+                    continue
             if 'positional' in properties:
                 if option.type() == 'boolean':
                     raise ValueError(_('boolean option must not be positional'))
@@ -548,6 +553,7 @@ class TiramisuCmdlineParser(ArgumentParser):
                                                root=self.root,
                                                fullpath=self.fullpath,
                                                remove_empty_od=self.remove_empty_od,
+                                               display_modified_value=self.display_modified_value,
                                                formatter_class=self.formatter_class,
                                                epilog=self.epilog,
                                                description=self.description,
@@ -560,6 +566,7 @@ class TiramisuCmdlineParser(ArgumentParser):
                                                root=self.root,
                                                fullpath=self.fullpath,
                                                remove_empty_od=self.remove_empty_od,
+                                               display_modified_value=self.display_modified_value,
                                                formatter_class=self.formatter_class,
                                                epilog=self.epilog,
                                                description=self.description,