 		rootSplitViewController.delegate = self
 		
 		masterNavigationController = (rootSplitViewController.viewControllers.first as! UINavigationController)
-		masterNavigationController.delegate = self
 		masterFeedViewController = UIStoryboard.main.instantiateController(ofType: MasterFeedViewController.self)
 		masterFeedViewController.coordinator = self
 		masterNavigationController.pushViewController(masterFeedViewController, animated: false)

			navControllerForTimeline().pushViewController(masterTimelineViewController!, animated: true)
		}
		
		if isThreePanelMode {
			let systemMessageViewController = UIStoryboard.main.instantiateController(ofType: SystemMessageViewController.self)
			let targetSplitController = targetSplitForDetail()
			let controller = addNavControllerIfNecessary(systemMessageViewController, split: targetSplitController, showBackButton: false)
			targetSplitController.showDetailViewController(controller, sender: self)
		}
	}
	
	func selectArticle(_ indexPath: IndexPath) {
		if detailViewController != nil {
			currentArticleIndexPath = indexPath
		} else {
			let targetSplit = targetSplitForDetail()

			let detailViewController = UIStoryboard.main.instantiateController(ofType: DetailViewController.self)

		
		activityViewController.popoverPresentationController?.barButtonItem = detailViewController.actionBarButtonItem
		detailViewController.present(activityViewController, animated: true)
	}
	
}
