diff --git a/osu.Game.Modes.Osu/Beatmaps/OsuBeatmapProcessor.cs b/osu.Game.Modes.Osu/Beatmaps/OsuBeatmapProcessor.cs
index 60f3d31765..1f7785f174 100644
--- a/osu.Game.Modes.Osu/Beatmaps/OsuBeatmapProcessor.cs
+++ b/osu.Game.Modes.Osu/Beatmaps/OsuBeatmapProcessor.cs
@@ -15,6 +15,9 @@ namespace osu.Game.Modes.Osu.Beatmaps
 
         public void PostProcess(Beatmap<OsuHitObject> beatmap)
         {
+            if (beatmap.ComboColors.Count == 0)
+                return;
+
             int comboIndex = 0;
             int colourIndex = 0;