diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/GBHawk.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/GBHawk.cs
index d14cc55f50..d7c8edcf4f 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/GBHawk.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/GBHawk.cs
@@ -278,7 +278,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
 		private void HardReset()
 		{
 			GB_bios_register = 0; // bios enable
-			GBC_compat = true;
+			GBC_compat = is_GBC;
 			in_vblank = true; // we start off in vblank since the LCD is off
 			in_vblank_old = true;