diff --git a/src/mame/drivers/arkanoid.c b/src/mame/drivers/arkanoid.c
index 6f647bf4224..1b930da142d 100644
--- a/src/mame/drivers/arkanoid.c
+++ b/src/mame/drivers/arkanoid.c
@@ -797,7 +797,7 @@ static const ay8910_interface ay8910_config =
 
 /* Machine Drivers */
 
-MACHINE_START( arkanoid )
+static MACHINE_START( arkanoid )
 {
 	arkanoid_state *state = (arkanoid_state *)machine->driver_data;
 
@@ -820,7 +820,7 @@ MACHINE_START( arkanoid )
 	state_save_register_global(machine, state->palettebank);
 }
 
-MACHINE_RESET( arkanoid )
+static MACHINE_RESET( arkanoid )
 {
 	arkanoid_state *state = (arkanoid_state *)machine->driver_data;
 
diff --git a/src/mame/includes/arkanoid.h b/src/mame/includes/arkanoid.h
index 2f2a9e2189b..c2397e4e573 100644
--- a/src/mame/includes/arkanoid.h
+++ b/src/mame/includes/arkanoid.h
@@ -47,9 +47,6 @@ extern VIDEO_UPDATE( arkanoid );
 
 /*----------- defined in machine/arkanoid.c -----------*/
 
-extern MACHINE_START( arkanoid );
-extern MACHINE_RESET( arkanoid );
-
 extern READ8_HANDLER( arkanoid_Z80_mcu_r );
 extern WRITE8_HANDLER( arkanoid_Z80_mcu_w );