From 84f3d4f48d60d3d8b2e10fa5d03cbfdfb6e5d32e Mon Sep 17 00:00:00 2001
From: Dean Herbert <pe@ppy.sh>
Date: Fri, 30 Nov 2018 17:15:32 +0900
Subject: [PATCH] Fix nullref

---
 osu.Game/Online/API/Requests/Responses/APIScoreInfo.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/osu.Game/Online/API/Requests/Responses/APIScoreInfo.cs b/osu.Game/Online/API/Requests/Responses/APIScoreInfo.cs
index 13633ce1e1..a7c9dbcd86 100644
--- a/osu.Game/Online/API/Requests/Responses/APIScoreInfo.cs
+++ b/osu.Game/Online/API/Requests/Responses/APIScoreInfo.cs
@@ -107,7 +107,8 @@ namespace osu.Game.Online.API.Requests.Responses
             set
             {
                 base.Beatmap = value;
-                Ruleset = value.Ruleset;
+                if (Beatmap.Ruleset != null)
+                    Ruleset = value.Ruleset;
             }
         }