diff --git a/BizHawk.Emulation.Cores/Consoles/Sega/gpgx64/GPGX.ITraceable.cs b/BizHawk.Emulation.Cores/Consoles/Sega/gpgx64/GPGX.ITraceable.cs
index 8fca3a8e16..377a6ab7be 100644
--- a/BizHawk.Emulation.Cores/Consoles/Sega/gpgx64/GPGX.ITraceable.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Sega/gpgx64/GPGX.ITraceable.cs
@@ -23,7 +23,7 @@ namespace BizHawk.Emulation.Cores.Consoles.Sega.gpgx
 			{
 				var regs = DebuggableCore.GetCpuFlagsAndRegisters();
 				uint pc = (uint)regs["M68K PC"].Value;
-				var disasm = Disassembler.Disassemble(MemoryDomains.SystemBus, pc, out int length);
+				var disasm = Disassembler.Disassemble(MemoryDomains.SystemBus, pc & 0xFFFFFF, out int length);
 
 				var traceInfo = new TraceInfo
 				{