diff --git a/src/mame/drivers/dkong.cpp b/src/mame/drivers/dkong.cpp
index e7e67ba0bf5..23c535787e7 100644
--- a/src/mame/drivers/dkong.cpp
+++ b/src/mame/drivers/dkong.cpp
@@ -1250,10 +1250,10 @@ INPUT_PORTS_END
 
 static INPUT_PORTS_START( shootgal )
 	PORT_START("IN0")      /* IN0 */
-	PORT_BIT( 0xff, 0x80, IPT_LIGHTGUN_X ) PORT_CROSSHAIR(X, 1.0, 0.0, 0) PORT_SENSITIVITY(50) PORT_KEYDELTA(4) PORT_REVERSE
+	PORT_BIT( 0xff, 0x80, IPT_LIGHTGUN_X ) PORT_CROSSHAIR(X, -1.0, -8.0/256, 0) PORT_SENSITIVITY(50) PORT_KEYDELTA(4) PORT_REVERSE
 
 	PORT_START("IN1")      /* IN1 */
-	PORT_BIT( 0xff, 0x80, IPT_LIGHTGUN_Y ) PORT_CROSSHAIR(Y, 1.0, 0.0, 0) PORT_SENSITIVITY(50) PORT_KEYDELTA(4) PORT_REVERSE
+	PORT_BIT( 0xff, 0x80, IPT_LIGHTGUN_Y ) PORT_CROSSHAIR(Y, -256.0/224, -24.0/256, 0) PORT_SENSITIVITY(50) PORT_KEYDELTA(4) PORT_REVERSE
 
 	PORT_INCLUDE( dkong_in2 )
 	PORT_MODIFY("IN2")