diff --git a/BizHawk.Client.EmuHawk/tools/HexEditor/HexEditor.cs b/BizHawk.Client.EmuHawk/tools/HexEditor/HexEditor.cs
index 94294609ae..ddc2ac8a15 100644
--- a/BizHawk.Client.EmuHawk/tools/HexEditor/HexEditor.cs
+++ b/BizHawk.Client.EmuHawk/tools/HexEditor/HexEditor.cs
@@ -301,7 +301,7 @@ namespace BizHawk.Client.EmuHawk
 			long startByte;
 			if (_addressHighlighted == -1)
 			{
-				startByte = _domain.Size - DataSize;
+				startByte = _domain.Size - DataSize - numByte;
 			}
 			else
 			{