diff --git a/administrator/components/com_messages/views/message/view.html.php b/administrator/components/com_messages/views/message/view.html.php
index 6ad6d12a7da33..d31fe187f0793 100644
--- a/administrator/components/com_messages/views/message/view.html.php
+++ b/administrator/components/com_messages/views/message/view.html.php
@@ -48,6 +48,7 @@ protected function addToolbar()
 	{
 		if ($this->getLayout() == 'edit')
 		{
+			JFactory::getApplication()->input->set('hidemainmenu', true);
 			JToolbarHelper::title(JText::_('COM_MESSAGES_WRITE_PRIVATE_MESSAGE'), 'envelope-opened new-privatemessage');
 			JToolbarHelper::save('message.save', 'COM_MESSAGES_TOOLBAR_SEND');
 			JToolbarHelper::cancel('message.cancel');