diff --git a/toxygen/contacts/contacts_manager.py b/toxygen/contacts/contacts_manager.py
index 9b4ad93..c1d0b10 100644
--- a/toxygen/contacts/contacts_manager.py
+++ b/toxygen/contacts/contacts_manager.py
@@ -203,8 +203,9 @@ class ContactsManager(ToxSave):
         self._settings['sorting'] = self._sorting
         self._settings.save()
         # update active contact
-        index = self._contacts.index(contact)
-        self.set_active(index)
+        if contact is not None:
+            index = self._contacts.index(contact)
+            self.set_active(index)
 
     def update_filtration(self):
         """
diff --git a/toxygen/middleware/callbacks.py b/toxygen/middleware/callbacks.py
index f8300ff..36bb960 100644
--- a/toxygen/middleware/callbacks.py
+++ b/toxygen/middleware/callbacks.py
@@ -409,7 +409,7 @@ def group_invite(window, settings, tray, profile, groups_service, contacts_provi
         if settings['notifications'] and profile.status != TOX_USER_STATUS['BUSY'] and not settings.locked:
             friend = contacts_provider.get_friend_by_number(friend_number)
             title = util_ui.tr('New invite to group chat')
-            text = util_ui.tr('{} invites you to group {}').format(friend.name, group_name)
+            text = util_ui.tr('{} invites you to group "{}"').format(friend.name, group_name)
             invoke_in_main_thread(tray_notification, title, text, tray, window)
         icon = os.path.join(util.get_images_directory(), 'icon_new_messages.png')
         invoke_in_main_thread(tray.setIcon, QtGui.QIcon(icon))
diff --git a/toxygen/ui/main_screen.py b/toxygen/ui/main_screen.py
index edf7ac6..4cccdd5 100644
--- a/toxygen/ui/main_screen.py
+++ b/toxygen/ui/main_screen.py
@@ -678,8 +678,9 @@ class MainWindow(QtWidgets.QMainWindow):
 
     def _selected_contact_changed(self):
         num = self.friends_list.currentRow()
-        self._contacts_manager.active_contact = num
-        self.groupMenuButton.setVisible(not self._contacts_manager.is_active_a_friend())
+        if self._contacts_manager.active_contact != num:
+            self._contacts_manager.active_contact = num
+        self.groupMenuButton.setVisible(self._contacts_manager.is_active_a_group())
 
     def mouseReleaseEvent(self, event):
         pos = self.connection_status.pos()
diff --git a/toxygen/wrapper/tox.py b/toxygen/wrapper/tox.py
index d705293..782020c 100644
--- a/toxygen/wrapper/tox.py
+++ b/toxygen/wrapper/tox.py
@@ -1553,10 +1553,11 @@ class Tox:
         error = c_int()
         peer_info = self.group_self_peer_info_new()
         nick = bytes(nick, 'utf-8')
+        group_name = group_name.encode('utf-8')
         peer_info.contents.nick = c_char_p(nick)
         peer_info.contents.nick_length = len(nick)
         peer_info.contents.user_status = status
-        result = Tox.libtoxcore.tox_group_new(self._tox_pointer, privacy_state, group_name.encode('utf-8'),
+        result = Tox.libtoxcore.tox_group_new(self._tox_pointer, privacy_state, group_name,
                                               len(group_name), peer_info, byref(error))
         return result
 
@@ -2180,11 +2181,12 @@ class Tox:
         result = Tox.libtoxcore.tox_group_invite_friend(self._tox_pointer, group_number, friend_number, byref(error))
         return result
 
-    def group_self_peer_info_new(self):
+    @staticmethod
+    def group_self_peer_info_new():
         error = c_int()
         f = Tox.libtoxcore.tox_group_self_peer_info_new
         f.restype = POINTER(GroupChatSelfPeerInfo)
-        result = f(self._tox_pointer, byref(error))
+        result = f(byref(error))
 
         return result