diff --git a/osu.Game/Graphics/UserInterface/OsuDropdown.cs b/osu.Game/Graphics/UserInterface/OsuDropdown.cs
index 562258f5b2..71ae149cf6 100644
--- a/osu.Game/Graphics/UserInterface/OsuDropdown.cs
+++ b/osu.Game/Graphics/UserInterface/OsuDropdown.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Diagnostics;
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
@@ -415,7 +416,8 @@ private void updateColour()
 
             private void updateChevron()
             {
-                bool open = Dropdown?.Menu.State == MenuState.Open;
+                Debug.Assert(Dropdown != null);
+                bool open = Dropdown.Menu.State == MenuState.Open;
                 Chevron.ScaleTo(open ? new Vector2(1f, -1f) : Vector2.One, 300, Easing.OutQuint);
             }