diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/MMC3.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/MMC3.cs
index cddb957e3d..5efb4ebfba 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/MMC3.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/MMC3.cs
@@ -307,7 +307,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 					else
 					{
 						separator_counter = 15;
-						irq_countdown = 6;
+						irq_countdown = 5;
 					}
 				}