diff --git a/osu.Game.Tests/OnlinePlay/TestSceneCatchUpSyncManager.cs b/osu.Game.Tests/OnlinePlay/TestSceneCatchUpSyncManager.cs
index 63ebe5187f..d601f187d8 100644
--- a/osu.Game.Tests/OnlinePlay/TestSceneCatchUpSyncManager.cs
+++ b/osu.Game.Tests/OnlinePlay/TestSceneCatchUpSyncManager.cs
@@ -15,6 +15,9 @@ using osu.Game.Tests.Visual;
 
 namespace osu.Game.Tests.OnlinePlay
 {
+    // NOTE: This test scene never calls ProcessFrame on clocks.
+    // The current tests are fine without this as they are testing very static scenarios, but it's worth knowing
+    // if adding further tests to this class.
     [HeadlessTest]
     public partial class TestSceneCatchUpSyncManager : OsuTestScene
     {