diff --git a/HISTORY.md b/HISTORY.md
index fa1fe1a7e1f..a47af213239 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,6 +1,7 @@
 ## NEXT
 
 - Fix #2634. Admins are warned if they have not verified their e-mail and e-mail verification is true.
+- Fix #2565 - Don't let the last owner leave the room. Warn user.
 
 ## 0.24.0, 2016-Mar-28
 
diff --git a/packages/rocketchat-lib/i18n/en.i18n.json b/packages/rocketchat-lib/i18n/en.i18n.json
index dc0d7bf6df2..a393efb9825 100644
--- a/packages/rocketchat-lib/i18n/en.i18n.json
+++ b/packages/rocketchat-lib/i18n/en.i18n.json
@@ -999,6 +999,7 @@
   "you_are_in_preview_mode_of" : "You are in preview mode of channel #<strong>__room_name__</strong>",
   "You_are_logged_in_as" : "You are logged in as",
   "You_are_not_authorized_to_view_this_page" : "You are not authorized to view this page.",
+  "You_are_the_last_owner_Please_set_new_owner_before_leaving_the_room" : "You are the last owner. Please set new owner before leaving the room.",
   "You_can_change_a_different_avatar_too" : "You can override the avatar used to post from this integration.",
   "You_can_use_an_emoji_as_avatar" : "You can also use an emoji as an avatar.",
   "You_have_been_muted" : "You have been muted and cannot speak in this room",
diff --git a/packages/rocketchat-lib/i18n/pt.i18n.json b/packages/rocketchat-lib/i18n/pt.i18n.json
index aa6d875eb0a..c229831c22d 100644
--- a/packages/rocketchat-lib/i18n/pt.i18n.json
+++ b/packages/rocketchat-lib/i18n/pt.i18n.json
@@ -538,6 +538,7 @@
   "you_are_in_preview_mode_of" : "Esta é uma prévia do canal #<strong>__room_name__</strong>",
   "You_are_logged_in_as" : "Vocês está logado como",
   "You_are_not_authorized_to_view_this_page" : "Você não possui permissão para visualizar esta página.",
+  "You_are_the_last_owner_Please_set_new_owner_before_leaving_the_room" : "Você é o último proprietário da sala. Por favor defina um novo proprietário antes de sair.",
   "You_have_successfully_unsubscribed" : "A partir de agora você não está mais cadastrado em nossa lista de e-mails.",
   "You_need_confirm_email" : "Você precisa confirmar seu email para logar!",
   "You_will_not_be_able_to_recover" : "Você não será capaz de desfazer!",
diff --git a/packages/rocketchat-slashcommands-leave/leave.coffee b/packages/rocketchat-slashcommands-leave/leave.coffee
index 1fc9c60b098..872346ff6a1 100644
--- a/packages/rocketchat-slashcommands-leave/leave.coffee
+++ b/packages/rocketchat-slashcommands-leave/leave.coffee
@@ -15,7 +15,15 @@ else
 	class Leave
 		constructor: (command, params, item) ->
 			if(command == "leave" || command == "part")
-				Meteor.call 'leaveRoom', item.rid
+				try
+					Meteor.call 'leaveRoom', item.rid
+				catch
+					RocketChat.Notifications.notifyUser Meteor.userId(), 'message', {
+						_id: Random.id()
+						rid: item.rid
+						ts: new Date
+						msg: TAPi18n.__('You_are_the_last_owner_Please_set_new_owner_before_leaving_the_room', null, Meteor.user().language)
+					}
 
 	RocketChat.slashCommands.add 'leave', Leave
 	RocketChat.slashCommands.add 'part', Leave
diff --git a/packages/rocketchat-ui-sidenav/side-nav/chatRoomItem.coffee b/packages/rocketchat-ui-sidenav/side-nav/chatRoomItem.coffee
index 904641aec2f..56cab80e750 100644
--- a/packages/rocketchat-ui-sidenav/side-nav/chatRoomItem.coffee
+++ b/packages/rocketchat-ui-sidenav/side-nav/chatRoomItem.coffee
@@ -91,12 +91,24 @@ Template.chatRoomItem.events
 			confirmButtonColor: '#DD6B55'
 			confirmButtonText: t('Yes_leave_it')
 			cancelButtonText: t('Cancel')
-			closeOnConfirm: true
+			closeOnConfirm: false
 			html: false
-		}, ->
-			if FlowRouter.getRouteName() in ['channel', 'group', 'direct'] and Session.get('openedRoom') is rid
-				FlowRouter.go 'home'
-
-			RoomManager.close rid
-
-			Meteor.call 'leaveRoom', rid
+		}, (isConfirm) ->
+			if isConfirm
+				Meteor.call 'leaveRoom', rid, (err) ->
+					if err
+						swal {
+							title: t('Warning')
+							text: t("You_are_the_last_owner_Please_set_new_owner_before_leaving_the_room")
+							type: 'warning'
+							html: false
+						}
+
+					else
+						swal.close()
+						if FlowRouter.getRouteName() in ['channel', 'group', 'direct'] and Session.get('openedRoom') is rid
+							FlowRouter.go 'home'
+
+						RoomManager.close rid
+			else
+				swal.close()
\ No newline at end of file
diff --git a/server/methods/leaveRoom.coffee b/server/methods/leaveRoom.coffee
index 3eeaeb988b4..221599dd974 100644
--- a/server/methods/leaveRoom.coffee
+++ b/server/methods/leaveRoom.coffee
@@ -9,6 +9,12 @@ Meteor.methods
 		room = RocketChat.models.Rooms.findOneById rid
 		user = Meteor.user()
 
+		# If user is room owner, check if there are other owners. If there isn't anyone else, warn user to set a new owner.
+		if RocketChat.authz.hasRole(user._id, 'owner', room._id)
+			numOwners = RocketChat.authz.getUsersInRole('owner', room._id).fetch().length
+			if numOwners is 1
+				throw new Meteor.Error 'last-owner', '[methods] leaveRoom -> User is last owner in room.'
+
 		RocketChat.callbacks.run 'beforeLeaveRoom', user, room
 
 		RocketChat.models.Rooms.removeUsernameById rid, user.username
@@ -20,15 +26,6 @@ Meteor.methods
 		if room.t is 'l'
 			RocketChat.models.Messages.createCommandWithRoomIdAndUser 'survey', rid, user
 
-
-		if room.u?._id is Meteor.userId()
-			newOwner = _.without(room.usernames, user.username)[0]
-			if newOwner?
-				newOwner = RocketChat.models.Users.findOneByUsername newOwner
-
-				if newOwner?
-					RocketChat.models.Rooms.setUserById rid, newOwner
-
 		RocketChat.models.Subscriptions.removeByRoomIdAndUserId rid, Meteor.userId()
 
 		Meteor.defer ->