diff --git a/src/mame/drivers/coolridr.c b/src/mame/drivers/coolridr.c
index 6e76cc14ab1..1575d1d21b6 100644
--- a/src/mame/drivers/coolridr.c
+++ b/src/mame/drivers/coolridr.c
@@ -2873,7 +2873,7 @@ static ADDRESS_MAP_START(aquastge_h1_map, AS_PROGRAM, 32, coolridr_state)
 	AM_RANGE(0x03c00000, 0x03c0ffff) AM_MIRROR(0x00200000) AM_RAM_WRITE(sysh1_dma_w) AM_SHARE("fb_vram") /* mostly mapped at 0x03e00000 */
 	AM_RANGE(0x03f50000, 0x03f5ffff) AM_RAM // video registers
 	AM_RANGE(0x03e10000, 0x03e1ffff) AM_RAM AM_SHARE("share3") /*Communication area RAM*/
-	AM_RANGE(0x03f00000, 0x03f0ffff) AM_RAM AM_SHARE("share3") /*Communication area RAM*/
+	AM_RANGE(0x03f00000, 0x03f0ffff) AM_RAM  /*Communication area RAM*/
 	AM_IMPORT_FROM(system_h1_map)
 ADDRESS_MAP_END
 
@@ -3056,7 +3056,7 @@ ADDRESS_MAP_END
 
 static ADDRESS_MAP_START( aquastge_submap, AS_PROGRAM, 32, coolridr_state )
 	AM_RANGE(0x05210000, 0x0521ffff) AM_RAM AM_SHARE("share3") /*Communication area RAM*/
-	AM_RANGE(0x05200000, 0x0537ffff) AM_RAM
+	//AM_RANGE(0x05200000, 0x0537ffff) AM_RAM
 	AM_RANGE(0x06000200, 0x06000207) AM_WRITENOP // program bug?
 	AM_RANGE(0x06100018, 0x0610001b) AM_READ_PORT("IN7")