diff --git a/src/mame/drivers/cps1.c b/src/mame/drivers/cps1.c
index 39be29b31be..6e2b53990a3 100644
--- a/src/mame/drivers/cps1.c
+++ b/src/mame/drivers/cps1.c
@@ -3053,7 +3053,7 @@ static INPUT_PORTS_START( sfzch )
 	PORT_DIPSETTING(    0xff, DEF_STR( Off ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
 
-	PORT_START("IN1")     /* Player 1 */
+	PORT_START("IN1")     /* Player 1 & 2 */
 	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT) PORT_PLAYER(1) PORT_8WAY
 	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT) PORT_PLAYER(1) PORT_8WAY
 	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) PORT_PLAYER(1) PORT_8WAY
@@ -3062,16 +3062,17 @@ static INPUT_PORTS_START( sfzch )
 	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2) PORT_PLAYER(1)
 	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON3) PORT_PLAYER(1)
 	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON4) PORT_PLAYER(1)
+	PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT) PORT_PLAYER(2) PORT_8WAY
+	PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT) PORT_PLAYER(2) PORT_8WAY
+	PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) PORT_PLAYER(2) PORT_8WAY
+	PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) PORT_PLAYER(2) PORT_8WAY
+	PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_PLAYER(2)
+	PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_BUTTON2) PORT_PLAYER(2)
+	PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_BUTTON3) PORT_PLAYER(2)
+	PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_BUTTON4) PORT_PLAYER(2)
 
-	PORT_START("IN2")      /* Player 2 */
-	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT) PORT_PLAYER(2) PORT_8WAY
-	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT) PORT_PLAYER(2) PORT_8WAY
-	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) PORT_PLAYER(2) PORT_8WAY
-	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) PORT_PLAYER(2) PORT_8WAY
-	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_PLAYER(2)
-	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2) PORT_PLAYER(2)
-	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON3) PORT_PLAYER(2)
-	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON4) PORT_PLAYER(2)
+	PORT_START("IN2")      /* Read by wofch */
+	PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_UNUSED )
 
 	PORT_START("IN3")      /* Player 4 - not used */
 	PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_UNUSED )