diff --git a/OpenRA.Mods.RA/Widgets/Logic/MusicPlayerLogic.cs b/OpenRA.Mods.RA/Widgets/Logic/MusicPlayerLogic.cs
index e155941ff0..c3d1252729 100644
--- a/OpenRA.Mods.RA/Widgets/Logic/MusicPlayerLogic.cs
+++ b/OpenRA.Mods.RA/Widgets/Logic/MusicPlayerLogic.cs
@@ -84,7 +84,7 @@ namespace OpenRA.Mods.RA.Widgets.Logic
 			var installButton = widget.GetOrNull<ButtonWidget>("INSTALL_BUTTON");
 			if (installButton != null)
 			{
-				installButton.IsDisabled = () => !world.IsShellmap;
+				installButton.IsDisabled = () => world == null || !world.IsShellmap;
 				var args = new string[] { "Launch.Window=INSTALL_MUSIC_PANEL" };
 				installButton.OnClick = () =>
 				{