diff --git a/osu.Game/Database/BeatmapDatabase.cs b/osu.Game/Database/BeatmapDatabase.cs
index e8638c11b0..03f904b7e8 100644
--- a/osu.Game/Database/BeatmapDatabase.cs
+++ b/osu.Game/Database/BeatmapDatabase.cs
@@ -129,6 +129,7 @@ namespace osu.Game.Database
                 {
                     BeatmapSetInfo set = getBeatmapSet(p);
 
+                    //If we have an ID then we already exist in the database.
                     if (set.ID == 0)
                         sets.Push(set);