diff --git a/gooey/python_bindings/argparse_to_json.py b/gooey/python_bindings/argparse_to_json.py
index 3508f7d..f4e3393 100644
--- a/gooey/python_bindings/argparse_to_json.py
+++ b/gooey/python_bindings/argparse_to_json.py
@@ -9,7 +9,8 @@ from argparse import (
   _StoreConstAction,
   _StoreFalseAction,
   _StoreTrueAction,
-  ArgumentParser, _SubParsersAction)
+  ArgumentParser,
+  _SubParsersAction)
 
 from collections import OrderedDict
 from functools import partial
@@ -150,7 +151,7 @@ def build_radio_group(mutex_group):
 
   options = [
     {
-      'display_name': mutex_arg.dest,
+      'display_name': mutex_arg.metavar or mutex_arg.dest,
       'help': mutex_arg.help,
       'nargs': mutex_arg.nargs or '',
       'commands': mutex_arg.option_strings,
@@ -174,7 +175,7 @@ def as_json(action, widget, required):
     'type': widget,
     'required': required,
     'data': {
-      'display_name': action.dest,
+      'display_name': action.metavar or action.dest,
       'help': action.help,
       'nargs': action.nargs or '',
       'commands': action.option_strings,
diff --git a/gooey/python_bindings/gooey_parser.py b/gooey/python_bindings/gooey_parser.py
index 9fe18e8..334e606 100644
--- a/gooey/python_bindings/gooey_parser.py
+++ b/gooey/python_bindings/gooey_parser.py
@@ -1,10 +1,23 @@
-from argparse import ArgumentParser, _SubParsersAction
+from argparse import ArgumentParser, _SubParsersAction, _MutuallyExclusiveGroup
 
 
 class GooeySubParser(_SubParsersAction):
   def __init__(self, *args, **kwargs):
     super(GooeySubParser, self).__init__(*args, **kwargs)
 
+class GooeyMutuallyExclusiveGroup(_MutuallyExclusiveGroup):
+  def __init__(self, parser, widgets, *args, **kwargs):
+    self.parser = parser
+    self.widgets = widgets
+    super(GooeyMutuallyExclusiveGroup, self).__init__(self.parser, *args, **kwargs)
+
+  def add_argument(self, *args, **kwargs):
+    widget = kwargs.pop('widget', None)
+    metavar = kwargs.pop('metavar', None)
+    super(GooeyMutuallyExclusiveGroup, self).add_argument(*args, **kwargs)
+    self.parser._actions[-1].metavar = metavar
+    self.widgets[self.parser._actions[-1].dest] = widget
+
 
 class GooeyParser(object):
   def __init__(self, **kwargs):
@@ -25,11 +38,18 @@ class GooeyParser(object):
 
   def add_argument(self, *args, **kwargs):
     widget = kwargs.pop('widget', None)
+    metavar = kwargs.pop('metavar', None)
     self.parser.add_argument(*args, **kwargs)
+    self.parser._actions[-1].metavar = metavar
     self.widgets[self.parser._actions[-1].dest] = widget
 
+  # def add_mutually_exclusive_group(self, **kwargs):
+  #   return self.parser.add_mutually_exclusive_group(**kwargs)
+
   def add_mutually_exclusive_group(self, **kwargs):
-    return self.parser.add_mutually_exclusive_group(**kwargs)
+    group = GooeyMutuallyExclusiveGroup(self.parser, self.widgets, **kwargs)
+    self.parser._mutually_exclusive_groups.append(group)
+    return group
 
   def add_argument_group(self, *args, **kwargs):
     return self.parser.add_argument_group(*args, **kwargs)