diff --git a/src/mame/drivers/dec8.c b/src/mame/drivers/dec8.c
index aa3e1187af7..9bcdc1bc385 100644
--- a/src/mame/drivers/dec8.c
+++ b/src/mame/drivers/dec8.c
@@ -1329,9 +1329,9 @@ static INPUT_PORTS_START( oscar )
 	PORT_DIPSETTING(    0x02, "5" )
 	PORT_DIPSETTING(    0x00, "Infinite (Cheat)")
 	PORT_DIPNAME( 0x0c, 0x0c, DEF_STR( Difficulty ) )
-	PORT_DIPSETTING(    0x04, DEF_STR( Easy ) )
+	PORT_DIPSETTING(    0x08, DEF_STR( Easy ) )
 	PORT_DIPSETTING(    0x0c, DEF_STR( Normal ) )
-	PORT_DIPSETTING(    0x08, DEF_STR( Hard ) )
+	PORT_DIPSETTING(    0x04, DEF_STR( Hard ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( Hardest ) )
 	PORT_DIPNAME( 0x30, 0x30, DEF_STR( Bonus_Life ) )
 	PORT_DIPSETTING(    0x30, "Every 40000" )
@@ -1402,9 +1402,9 @@ static INPUT_PORTS_START( oscaru )
 	PORT_DIPSETTING(    0x02, "5" )
 	PORT_DIPSETTING(    0x00, "Infinite (Cheat)")
 	PORT_DIPNAME( 0x0c, 0x0c, DEF_STR( Difficulty ) )
-	PORT_DIPSETTING(    0x04, DEF_STR( Easy ) )
+	PORT_DIPSETTING(    0x08, DEF_STR( Easy ) )
 	PORT_DIPSETTING(    0x0c, DEF_STR( Normal ) )
-	PORT_DIPSETTING(    0x08, DEF_STR( Hard ) )
+	PORT_DIPSETTING(    0x04, DEF_STR( Hard ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( Hardest ) )
 	PORT_DIPNAME( 0x30, 0x30, DEF_STR( Bonus_Life ) )
 	PORT_DIPSETTING(    0x30, "Every 40000" )
diff --git a/src/mame/drivers/karnov.c b/src/mame/drivers/karnov.c
index 59d94688c4d..19d233bb562 100644
--- a/src/mame/drivers/karnov.c
+++ b/src/mame/drivers/karnov.c
@@ -488,9 +488,9 @@ static INPUT_PORTS_START( karnov )
 	PORT_DIPSETTING(      0x0400, "90 K" )
 	PORT_DIPSETTING(      0x0000, "100 K" )
 	PORT_DIPNAME( 0x3000, 0x3000, DEF_STR( Difficulty ) ) PORT_DIPLOCATION("SW2:5,6")
-	PORT_DIPSETTING(      0x3000, DEF_STR( Easy ) )
-	PORT_DIPSETTING(      0x1000, DEF_STR( Normal ) )
-	PORT_DIPSETTING(      0x2000, DEF_STR( Hard ) )
+	PORT_DIPSETTING(      0x2000, DEF_STR( Easy ) )
+	PORT_DIPSETTING(      0x3000, DEF_STR( Normal ) )
+	PORT_DIPSETTING(      0x1000, DEF_STR( Hard ) )
 	PORT_DIPSETTING(      0x0000, DEF_STR( Very_Hard ) )
 	PORT_DIPNAME( 0x4000, 0x4000, DEF_STR( Demo_Sounds ) ) PORT_DIPLOCATION("SW2:7")
 	PORT_DIPSETTING(      0x0000, DEF_STR( Off ) )