diff --git a/src/mame/drivers/tv912.cpp b/src/mame/drivers/tv912.cpp
index 4bef50ef311..23b34652899 100644
--- a/src/mame/drivers/tv912.cpp
+++ b/src/mame/drivers/tv912.cpp
@@ -673,7 +673,7 @@ static INPUT_PORTS_START( tv912b )
 	PORT_BIT(0xdc, IP_ACTIVE_LOW, IPT_UNUSED)
 
 	PORT_START("KEY30")
-	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN)) PORT_CODE(KEYCODE_DOWN)
+	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(UCHAR_MAMEKEY(DOWN)) PORT_CODE(KEYCODE_DOWN)
 	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNKNOWN) // control character (CLR TAB)
 	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNKNOWN)
 	PORT_BIT(0xdc, IP_ACTIVE_LOW, IPT_UNUSED)
@@ -869,7 +869,7 @@ static INPUT_PORTS_START( tv912c )
 	PORT_BIT(0xdc, IP_ACTIVE_LOW, IPT_UNUSED)
 
 	PORT_START("KEY30")
-	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNKNOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN)) PORT_CODE(KEYCODE_DOWN)
+	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(UCHAR_MAMEKEY(DOWN)) PORT_CODE(KEYCODE_DOWN)
 	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNKNOWN) // (DEL)
 	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNKNOWN)
 	PORT_BIT(0xdc, IP_ACTIVE_LOW, IPT_UNUSED)