diff --git a/src/Ryujinx.Graphics.Vulkan/HelperShader.cs b/src/Ryujinx.Graphics.Vulkan/HelperShader.cs
index 03e965fb9..e6e584f97 100644
--- a/src/Ryujinx.Graphics.Vulkan/HelperShader.cs
+++ b/src/Ryujinx.Graphics.Vulkan/HelperShader.cs
@@ -926,7 +926,7 @@ namespace Ryujinx.Graphics.Vulkan
             _pipeline.SetStorageBuffers(1, new[] { srcIndexBuffer.GetBuffer(), dstIndexBuffer.GetBuffer() });
 
             _pipeline.SetProgram(_programConvertIndexBuffer);
-            _pipeline.DispatchCompute(1, 1, 1);
+            _pipeline.DispatchCompute(BitUtils.DivRoundUp(primitiveCount, 16), 1, 1);
 
             BufferHolder.InsertBufferBarrier(
                 gd,