diff --git a/src/mame/drivers/taito_f2.cpp b/src/mame/drivers/taito_f2.cpp
index cc51751917b..c990acd541b 100644
--- a/src/mame/drivers/taito_f2.cpp
+++ b/src/mame/drivers/taito_f2.cpp
@@ -1736,8 +1736,11 @@ static INPUT_PORTS_START( qzquest )
 
 	PORT_START("DSWB")
 	TAITO_DIFFICULTY_LOC(SW2)  //??
-	PORT_DIPUNUSED_DIPLOC( 0x04, 0x04, "SW2:3" )
-	PORT_DIPUNUSED_DIPLOC( 0x08, 0x08, "SW2:4" )
+	PORT_DIPNAME( 0x0c, 0x0c, "Countdown Timer" ) PORT_DIPLOCATION("SW2:3,4")
+	PORT_DIPSETTING(    0x00, "Very Slow" )
+	PORT_DIPSETTING(    0x04, "Slow" )
+	PORT_DIPSETTING(    0x0c, "Medium" )
+	PORT_DIPSETTING(    0x08, "Fast" )
 	PORT_DIPUNUSED_DIPLOC( 0x10, 0x10, "SW2:5" )
 	PORT_DIPUNUSED_DIPLOC( 0x20, 0x20, "SW2:6" )
 	PORT_DIPUNUSED_DIPLOC( 0x40, 0x40, "SW2:7" )