diff --git a/src/BizHawk.Emulation.Common/filetype_detectors/SatellaviewFileTypeDetector.cs b/src/BizHawk.Emulation.Common/filetype_detectors/SatellaviewFileTypeDetector.cs
index 7ce8f34316..4a051dd4e9 100644
--- a/src/BizHawk.Emulation.Common/filetype_detectors/SatellaviewFileTypeDetector.cs
+++ b/src/BizHawk.Emulation.Common/filetype_detectors/SatellaviewFileTypeDetector.cs
@@ -38,7 +38,7 @@ namespace BizHawk.Emulation.Common
 
 			private const int OFFSET_REVISION = 0x2B; // 1 octet
 
-			private const int OFFSET_SELFDESTRUCT = 0x24; // 2 octets, but the lower 10 bits are always 0, so effectively 1 octet
+			private const int OFFSET_SELFDESTRUCT = 0x25; // 1 octet; technically 2 octets LE at 0x24, but the least-significant 10 bits are always 0
 
 			private const int OFFSET_SPEED = 0x28; // 1 octet