diff --git a/osu.Game/Screens/Edit/Components/Timelines/Summary/Parts/MarkerPart.cs b/osu.Game/Screens/Edit/Components/Timelines/Summary/Parts/MarkerPart.cs
index 367cf4337d..b2308aca71 100644
--- a/osu.Game/Screens/Edit/Components/Timelines/Summary/Parts/MarkerPart.cs
+++ b/osu.Game/Screens/Edit/Components/Timelines/Summary/Parts/MarkerPart.cs
@@ -47,6 +47,8 @@ namespace osu.Game.Screens.Edit.Components.Timelines.Summary.Parts
             if (Beatmap.Value == null)
                 return;
 
+            if (Beatmap.Value.Track.Length == double.PositiveInfinity) return;
+
             float markerPos = MathHelper.Clamp(ToLocalSpace(screenPosition).X, 0, DrawWidth);
             seekTo(markerPos / DrawWidth * Beatmap.Value.Track.Length);
         }