diff --git a/src/mame/drivers/segas16a.c b/src/mame/drivers/segas16a.c
index ea7a6a57558..a9082355d52 100644
--- a/src/mame/drivers/segas16a.c
+++ b/src/mame/drivers/segas16a.c
@@ -3508,5 +3508,5 @@ GAME( 1987, sjryuko1,   sjryuko,  system16a_fd1089b,        sjryuko,    segas16a
 GAME( 1988, tetris,     0,        system16a_fd1094_no7751,  tetris,     segas16a_state,generic,     ROT0,   "Sega", "Tetris (set 4, Japan, System 16A, FD1094 317-0093)", GAME_SUPPORTS_SAVE )
 GAME( 1988, tetris3,    tetris,   system16a_fd1094_no7751,  tetris,     segas16a_state,generic,     ROT0,   "Sega", "Tetris (set 3, Japan, System 16A, FD1094 317-0093a)", GAME_SUPPORTS_SAVE )
 GAME( 1987, timescan1,  timescan, system16a_fd1089b,        timescan,   segas16a_state,generic,     ROT270, "Sega", "Time Scanner (set 1, System 16A, FD1089B 317-0024)", GAME_SUPPORTS_SAVE )
-GAME( 1988, wb31,       wb3,      system16a_fd1094_no7751,  wb3,        segas16a_state,generic,     ROT0,   "Sega / Westone", "Wonder Boy III - Monster Lair (set 1, System 16A, FD1094 317-0084)", GAME_SUPPORTS_SAVE )
-GAME( 1988, wb35,       wb3,      system16a_fd1089a_no7751, wb3,        segas16a_state,generic,     ROT0,   "Sega / Westone", "Wonder Boy III - Monster Lair (set 5, System 16A, FD1089A 317-0086)", GAME_SUPPORTS_SAVE )
+GAME( 1988, wb31,       wb3,      system16a_fd1094_no7751,  wb3,        segas16a_state,generic,     ROT0,   "Sega / Westone", "Wonder Boy III - Monster Lair (set 1, Japan, System 16A, FD1094 317-0084)", GAME_SUPPORTS_SAVE )
+GAME( 1988, wb35,       wb3,      system16a_fd1089a_no7751, wb3,        segas16a_state,generic,     ROT0,   "Sega / Westone", "Wonder Boy III - Monster Lair (set 5, Japan, System 16A, FD1089A 317-0086)", GAME_SUPPORTS_SAVE )
diff --git a/src/mame/drivers/segas16b.c b/src/mame/drivers/segas16b.c
index 0d5357c5030..be2743452da 100644
--- a/src/mame/drivers/segas16b.c
+++ b/src/mame/drivers/segas16b.c
@@ -6716,7 +6716,7 @@ GAME( 1994, toryumon,   0,        system16b_5797,      toryumon, segas16b_state,
 GAME( 1989, tturf,      0,        system16b_i8751,     tturf,    segas16b_state,tturf_5704,         ROT0,   "Sega / Sunsoft", "Tough Turf (set 2, Japan, 8751 317-0104)", GAME_NO_SOUND ) // due to missing ROM only
 GAME( 1989, tturfu,     tturf,    system16b_i8751,     tturf,    segas16b_state,generic_5358,       ROT0,   "Sega / Sunsoft", "Tough Turf (set 1, US, 8751 317-0099)", 0)
 
-GAME( 1988, wb3,        0,        system16b_i8751,     wb3,      segas16b_state,wb3_5704,           ROT0,   "Sega / Westone", "Wonder Boy III - Monster Lair (set 5, World, System 16B, 8751 317-0098)", 0 )
+GAME( 1988, wb3,        0,        system16b_i8751,     wb3,      segas16b_state,wb3_5704,           ROT0,   "Sega / Westone", "Wonder Boy III - Monster Lair (set 6, World, System 16B, 8751 317-0098)", 0 )
 GAME( 1988, wb34,       wb3,      system16b_fd1094,    wb3,      segas16b_state,generic_5704,       ROT0,   "Sega / Westone", "Wonder Boy III - Monster Lair (set 4, Japan, System 16B, FD1094 317-0087)", 0 )
 GAME( 1988, wb33,       wb3,      system16b_fd1094,    wb3,      segas16b_state,generic_5704,       ROT0,   "Sega / Westone", "Wonder Boy III - Monster Lair (set 3, World, System 16B, FD1094 317-0089)", 0 )
 GAME( 1988, wb32,       wb3,      system16b_fd1094,    wb3,      segas16b_state,generic_5358,       ROT0,   "Sega / Westone", "Wonder Boy III - Monster Lair (set 2, Japan, System 16B, FD1094 317-0085)", 0 )