diff --git a/src/BizHawk.Emulation.Cores/Consoles/Sega/gpgx64/GPGX.cs b/src/BizHawk.Emulation.Cores/Consoles/Sega/gpgx64/GPGX.cs
index 4426560a09..4c3f3bd68c 100644
--- a/src/BizHawk.Emulation.Cores/Consoles/Sega/gpgx64/GPGX.cs
+++ b/src/BizHawk.Emulation.Cores/Consoles/Sega/gpgx64/GPGX.cs
@@ -319,7 +319,7 @@ namespace BizHawk.Emulation.Cores.Consoles.Sega.gpgx
 				{
 					ret.tracks[i].start = ses.Tracks[i + 1].LBA;
 					ret.tracks[i].end = ses.Tracks[i + 2].LBA;
-					ret.tracks[i].mode = ses.Tracks[i].Mode;
+					ret.tracks[i].mode = ses.Tracks[i + 1].Mode;
 					if (i == ntrack - 1)
 					{
 						ret.end = ret.tracks[i].end;