diff --git a/src/mame/drivers/expro02.c b/src/mame/drivers/expro02.c
index 962724410ba..5359ffdf755 100644
--- a/src/mame/drivers/expro02.c
+++ b/src/mame/drivers/expro02.c
@@ -421,7 +421,7 @@ static ADDRESS_MAP_START( fantasia_map, AS_PROGRAM, 16 )
 	AM_RANGE(0x583000, 0x583fff) AM_RAM AM_BASE_MEMBER(expro02_state, m_vscroll[0])									//
 	AM_RANGE(0x600000, 0x600fff) AM_RAM_WRITE(galsnew_paletteram_w) AM_BASE_GENERIC(paletteram) // palette?
 	AM_RANGE(0x680000, 0x68001f) AM_RAM_WRITE(kaneko16_layers_0_regs_w) AM_BASE_MEMBER(expro02_state, m_layers_0_regs) // sprite regs? tileregs?
-	AM_RANGE(0x700000, 0x700fff) AM_RAM AM_BASE_SIZE_MEMBER(expro02_state, m_spriteram, m_spriteram_size)	 // sprites? 0x72f words tested
+	AM_RANGE(0x700000, 0x700fff) AM_RAM AM_BASE_SIZE_GENERIC(spriteram)	 // sprites? 0x72f words tested
 	AM_RANGE(0x780000, 0x78001f) AM_RAM_WRITE(kaneko16_sprites_regs_w) AM_BASE_MEMBER(expro02_state, m_sprites_regs) // sprite regs? tileregs?
 	AM_RANGE(0x800000, 0x800001) AM_READ_PORT("DSW1")
 	AM_RANGE(0x800002, 0x800003) AM_READ_PORT("DSW2")