diff --git a/osu.Game/Graphics/Backgrounds/Triangles.cs b/osu.Game/Graphics/Backgrounds/Triangles.cs
index 35c48a50d0..ab8763e576 100644
--- a/osu.Game/Graphics/Backgrounds/Triangles.cs
+++ b/osu.Game/Graphics/Backgrounds/Triangles.cs
@@ -13,6 +13,7 @@
 using osu.Framework.Allocation;
 using System.Collections.Generic;
 using osu.Framework.Graphics.Batches;
+using osu.Framework.Graphics.OpenGL.Buffers;
 using osu.Framework.Graphics.OpenGL.Vertices;
 using osu.Framework.Lists;
 
@@ -181,7 +182,10 @@ public void Reset(int? seed = null)
 
         private void addTriangles(bool randomY)
         {
-            AimCount = (int)(DrawWidth * DrawHeight * 0.002f / (triangleScale * triangleScale) * SpawnRatio);
+            // limited by the maximum size of QuadVertexBuffer for safety.
+            const int max_triangles = QuadVertexBuffer<TexturedVertex2D>.MAX_QUADS;
+
+            AimCount = (int)Math.Min(max_triangles, (DrawWidth * DrawHeight * 0.002f / (triangleScale * triangleScale) * SpawnRatio));
 
             for (int i = 0; i < AimCount - parts.Count; i++)
                 parts.Add(createTriangle(randomY));