diff --git a/src/mame/drivers/crospang.cpp b/src/mame/drivers/crospang.cpp
index c283edf52f6..c4033000661 100644
--- a/src/mame/drivers/crospang.cpp
+++ b/src/mame/drivers/crospang.cpp
@@ -379,7 +379,7 @@ static INPUT_PORTS_START( pitapat )
 	PORT_DIPNAME( 0x2000, 0x2000, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW2:6")
 	PORT_DIPSETTING(      0x2000, DEF_STR( Off ) )
 	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
-	PORT_DIPNAME( 0x4000, 0x4000, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW2:7")
+	PORT_DIPNAME( 0x4000, 0x4000, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW2:7") // this and the following dip might be difficulty related. By having one or both of them on, most of the times you win the first round without doing anything
 	PORT_DIPSETTING(      0x4000, DEF_STR( Off ) )
 	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
 	PORT_DIPNAME( 0x8000, 0x8000, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW2:8")