diff --git a/doc/config/common.md b/doc/config/common.md
index 56283b5..7249d49 100644
--- a/doc/config/common.md
+++ b/doc/config/common.md
@@ -396,8 +396,8 @@ is an issue. Billing types are:
 Default: `0x64`
 
 An 8-bit bitfield of unclear meaning. The least significant bit indicates a
-developer dongle, I think? Changing this doesn't seem to have any effect on
-anything other than Project DIVA.
+developer dongle. Changing this doesn't seem to have any effect on
+anything other than SEGA AM2 games.
 
 Other values observed in the wild: