diff --git a/src/mame/drivers/skeetsht.c b/src/mame/drivers/skeetsht.c
index df69f644936..0930a6f2096 100644
--- a/src/mame/drivers/skeetsht.c
+++ b/src/mame/drivers/skeetsht.c
@@ -155,6 +155,7 @@ static WRITE8_HANDLER( ay8910_w )
 static ADDRESS_MAP_START( hc11_pgm_map, ADDRESS_SPACE_PROGRAM, 8 )
 	AM_RANGE(0x2800, 0x2807) AM_READWRITE(tms_r, tms_w)
 	AM_RANGE(0x1800, 0x1800) AM_WRITE(ay8910_w)
+	AM_RANGE(0xb600, 0xbdff) AM_RAM //internal EEPROM
 	AM_RANGE(0x0000, 0xffff) AM_ROM AM_REGION("68hc11", 0)
 ADDRESS_MAP_END