diff --git a/src/dialogs.py b/src/dialogs.py
index 55e65b008..08bf34cc4 100644
--- a/src/dialogs.py
+++ b/src/dialogs.py
@@ -1090,12 +1090,19 @@ class ConfirmationDialogCheck(ConfirmationDialog):
 
 	def on_response_ok(self, widget):
 		if self.user_response_ok:
-			self.user_response_ok(self.is_checked())
+			if isinstance(self.user_response_ok, tuple):
+				self.user_response_ok[0](self.is_checked(),
+					*self.user_response_ok[1:])
+			else:
+				self.user_response_ok(self.is_checked())
 		self.destroy()
 
 	def on_response_cancel(self, widget):
 		if self.user_response_cancel:
-			self.user_response_cancel()
+			if isinstance(self.user_response_cancel, tuple):
+				self.user_response_cancel[0](*self.user_response_ok[1:])
+			else:
+				self.user_response_cancel()
 		self.destroy()
 
 	def is_checked(self):
diff --git a/src/groupchat_control.py b/src/groupchat_control.py
index c6e88708c..328d46473 100644
--- a/src/groupchat_control.py
+++ b/src/groupchat_control.py
@@ -1598,8 +1598,6 @@ class GroupchatControl(ChatControlBase):
 			if dialog.is_checked(): # user does not want to be asked again
 				gajim.config.set('confirm_close_muc', False)
 
-			dialog.destroy()
-
 		return retval
 
 	def set_control_active(self, state):
diff --git a/src/gtkgui_helpers.py b/src/gtkgui_helpers.py
index b69e4cba9..e5aefca51 100644
--- a/src/gtkgui_helpers.py
+++ b/src/gtkgui_helpers.py
@@ -644,12 +644,10 @@ def possibly_set_gajim_as_xmpp_handler():
 	else:
 		path_to_kde_file = None
 
-	def set_gajim_as_xmpp_handler(widget = None):
-		if widget:
+	def set_gajim_as_xmpp_handler(is_checked=None):
+		if is_checked != None:
 			# come from confirmation dialog
-			gajim.config.set('check_if_gajim_is_default',
-				dlg.checkbutton.get_active())
-			dlg.destroy()
+			gajim.config.set('check_if_gajim_is_default', is_checked)
 		path_to_gajim_script, typ = get_abspath_for_script('gajim-remote', True)
 		if path_to_gajim_script:
 			if typ == 'svn':
@@ -712,10 +710,9 @@ Description=xmpp
 		sectext = _('Would you like to make Gajim the default Jabber client?')
 		checktext = _('Always check to see if Gajim is the default Jabber client '
 			'on startup')
-		def on_cancel(widget):
+		def on_cancel():
 			gajim.config.set('check_if_gajim_is_default',
-				dlg.checkbutton.get_active())
-			dlg.destroy()
+				dlg.is_checked())
 		dlg = dialogs.ConfirmationDialogCheck(pritext, sectext, checktext,
 			set_gajim_as_xmpp_handler, on_cancel)
 		if gajim.config.get('check_if_gajim_is_default'):
diff --git a/src/roster_window.py b/src/roster_window.py
index e48999807..5a43b6889 100644
--- a/src/roster_window.py
+++ b/src/roster_window.py
@@ -3319,12 +3319,11 @@ class RosterWindow:
 
 	def on_req_usub(self, widget, list_):
 		'''Remove a contact. list_ is a list of (contact, account) tuples'''
-		def on_ok(widget, list_):
-			self.dialog.destroy()
+		def on_ok(is_checked, list_):
 			remove_auth = True
 			if len(list_) == 1:
 				contact = list_[0][0]
-				if contact.sub != 'to' and self.dialog.is_checked():
+				if contact.sub != 'to' and is_checked:
 					remove_auth = False
 			for (contact, account) in list_:
 				gajim.connections[account].unsubscribe(contact.jid, remove_auth)
@@ -4804,10 +4803,9 @@ class RosterWindow:
 				'server'),
 				_('Your server does not support storing metacontacts information. '
 				'So those information will not be saved on next reconnection.'))
-		def merge_contacts(widget = None):
-			if widget: # dialog has been shown
-				dlg.destroy()
-				if dlg.is_checked(): # user does not want to be asked again
+		def merge_contacts(is_checked=None):
+			if is_checked != None: # dialog has been shown
+				if is_checked: # user does not want to be asked again
 					gajim.config.set('confirm_metacontacts', 'no')
 				else:
 					gajim.config.set('confirm_metacontacts', 'yes')