diff --git a/src/mame/drivers/mitchell.c b/src/mame/drivers/mitchell.c
index c7f47dc1617..c72d2f2a69f 100644
--- a/src/mame/drivers/mitchell.c
+++ b/src/mame/drivers/mitchell.c
@@ -363,7 +363,7 @@ static ADDRESS_MAP_START( mitchell_map, ADDRESS_SPACE_PROGRAM, 8 )
 	AM_RANGE(0xc000, 0xc7ff) AM_READWRITE(pang_paletteram_r,pang_paletteram_w) /* Banked palette RAM */
 	AM_RANGE(0xc800, 0xcfff) AM_READWRITE(pang_colorram_r,pang_colorram_w) AM_BASE(&pang_colorram) /* Attribute RAM */
 	AM_RANGE(0xd000, 0xdfff) AM_READWRITE(pang_videoram_r,pang_videoram_w) AM_BASE(&pang_videoram) AM_SIZE(&pang_videoram_size)/* Banked char / OBJ RAM */
-	AM_RANGE(0xe000, 0xffff) AM_READ(SMH_RAM)	/* Work RAM */
+	AM_RANGE(0xe000, 0xffff) AM_RAM	/* Work RAM */
 ADDRESS_MAP_END
 
 static ADDRESS_MAP_START( mitchell_io_map, ADDRESS_SPACE_IO, 8 )