diff --git a/src/mame/drivers/goldstar.cpp b/src/mame/drivers/goldstar.cpp
index 9c4f513549e..1ef0699801c 100644
--- a/src/mame/drivers/goldstar.cpp
+++ b/src/mame/drivers/goldstar.cpp
@@ -4143,8 +4143,8 @@ static INPUT_PORTS_START( mbstar )
 	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_OTHER ) PORT_CODE(KEYCODE_R) PORT_NAME("IN1-4")
 	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_OTHER ) PORT_CODE(KEYCODE_T) PORT_NAME("IN1-5")
 	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_OTHER ) PORT_CODE(KEYCODE_Y) PORT_NAME("IN1-6")
-	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_OTHER ) PORT_CODE(KEYCODE_U) PORT_NAME("IN1-7")
-	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_OTHER ) PORT_CODE(KEYCODE_I) PORT_NAME("IN1-8")
+	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_CODE(KEYCODE_U) PORT_NAME("Bookkeeping: Down")  // BK: down.
+	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_CODE(KEYCODE_I) PORT_NAME("Bookkeeping: Set/Enter")  // BK: enter. (start?)
 
 	PORT_START("IN2")
 	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_OTHER ) PORT_CODE(KEYCODE_A) PORT_NAME("IN2-1")