diff --git a/src/mame/drivers/mjsenpu.cpp b/src/mame/drivers/mjsenpu.cpp
index 7a05720bbce..d3ffc7c22fd 100644
--- a/src/mame/drivers/mjsenpu.cpp
+++ b/src/mame/drivers/mjsenpu.cpp
@@ -91,7 +91,7 @@ WRITE8_MEMBER(mjsenpu_state::palette_high_w)
 WRITE8_MEMBER(mjsenpu_state::oki_bank_w)
 {
 	// or some input muxing?
-	if (data!=0x80 && data !=0x81)
+	if (data &~0x93)
 		printf("oki bank_w %02x\n", data);
 }
 
@@ -214,9 +214,9 @@ static INPUT_PORTS_START( mjsenpu )
 	PORT_DIPNAME( 0x00000004, 0x00000004, "Value 3" )
 	PORT_DIPSETTING(          0x00000004, "0" )
 	PORT_DIPSETTING(          0x00000000, "1" )
-	PORT_DIPNAME( 0x00000008, 0x00000008, "Symbol 1" )
-	PORT_DIPSETTING(          0x00000008, "0" )
-	PORT_DIPSETTING(          0x00000000, "1" )
+	PORT_DIPNAME( 0x00000008, 0x00000000, DEF_STR( Demo_Sounds )  )
+	PORT_DIPSETTING(          0x00000008, DEF_STR( Off ) )
+	PORT_DIPSETTING(          0x00000000, DEF_STR( On ) )
 	PORT_DIPNAME( 0x00000010, 0x00000010, DEF_STR( Flip_Screen ) )
 	PORT_DIPSETTING(          0x00000010, DEF_STR( Off ) )
 	PORT_DIPSETTING(          0x00000000, DEF_STR( On ) )
@@ -240,9 +240,9 @@ static INPUT_PORTS_START( mjsenpu )
 	PORT_DIPNAME( 0x00000004, 0x00000004, "Symbol 3" )
 	PORT_DIPSETTING(          0x00000004, "0" )
 	PORT_DIPSETTING(          0x00000000, "1" )
-	PORT_DIPNAME( 0x00000008, 0x00000008, "Symbol 4" )
-	PORT_DIPSETTING(          0x00000008, "0" )
-	PORT_DIPSETTING(          0x00000000, "1" )
+	PORT_DIPNAME( 0x00000008, 0x00000008, "Control Type" )
+	PORT_DIPSETTING(          0x00000008, "Mahjong Panel" )
+	PORT_DIPSETTING(          0x00000000, "Joystick" )
 	PORT_DIPNAME( 0x00000010, 0x00000010, "Symbol 5" )
 	PORT_DIPSETTING(          0x00000010, "0" )
 	PORT_DIPSETTING(          0x00000000, "1" )