diff --git a/src/mame/drivers/deco32.c b/src/mame/drivers/deco32.c
index be71db6eed5..8e1a5e10f96 100644
--- a/src/mame/drivers/deco32.c
+++ b/src/mame/drivers/deco32.c
@@ -243,9 +243,9 @@ DE-0395-1   DEC-22VO
 |M                |-----|  |-----|            28MHz   |
 |A  |-----|                                           |
 |   | 99  |  VM-02                                    |
-|   |     |  LN-00             |-----| 6164    MBF-01 |
+|   |     |  LN-00             |-----| 6164    MBH-01 |
 |   |-----|                    | 74  | 6164           |
-|                              |     |         MBF-00 |
+|                              |     |         MBH-00 |
 |      |-----|  |-----|        |-----|                |
 |      | 113 |  | 200 |        |-----| 6164           |
 |      |     |  |     |        | 141 | 6164           |