From a1144636784c7ea3485ef04ae158a048e4e54d10 Mon Sep 17 00:00:00 2001
From: Dean Herbert <pe@ppy.sh>
Date: Thu, 29 Sep 2016 23:52:51 +0900
Subject: [PATCH] Add null check.

---
 osu.Game/GameModes/GameModeWhiteBox.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/osu.Game/GameModes/GameModeWhiteBox.cs b/osu.Game/GameModes/GameModeWhiteBox.cs
index b46987ee1b..8779e46a87 100644
--- a/osu.Game/GameModes/GameModeWhiteBox.cs
+++ b/osu.Game/GameModes/GameModeWhiteBox.cs
@@ -29,7 +29,8 @@ namespace osu.Game.GameModes
         protected override double OnEntering(GameMode last)
         {
             //only show the pop button if we are entered form another gamemode.
-            popButton.Alpha = 1;
+            if (last != null)
+                popButton.Alpha = 1;
 
             MoveTo(new Vector2(ActualSize.X, 0));
             MoveTo(Vector2.Zero, transition_time, EasingTypes.OutQuint);