diff --git a/src/mame/drivers/segas16b.cpp b/src/mame/drivers/segas16b.cpp
index d1135182ca0..6635f27ffa3 100644
--- a/src/mame/drivers/segas16b.cpp
+++ b/src/mame/drivers/segas16b.cpp
@@ -7873,7 +7873,9 @@ ROM_END
 //  Sonic Boom, Sega System 16B
 //  CPU: FD1094 (317-0053)
 //  ROM Board type: 171-5358
-//  Sega ID# for ROM board: 834-6532-01
+//  Sega game ID: 833-6531-01 SONIC BOOM
+//    Main board: 837-6533
+//     Rom board: 834-6532-01
 //
 //  Pos.   Silk        Type        Part                Pos.   Silk        Type        Part
 //