diff --git a/src/mame/drivers/20pacgal.c b/src/mame/drivers/20pacgal.c
index 19a2a7514de..66a920e6fef 100644
--- a/src/mame/drivers/20pacgal.c
+++ b/src/mame/drivers/20pacgal.c
@@ -332,6 +332,8 @@ static MACHINE_START( 20pacgal )
 
 	state->save_item(NAME(state->m_game_selected));
 	state->save_item(NAME(state->m_ram_48000));
+	state->save_item(NAME(state->m_irq_mask));
+
 	machine.save().register_postload(save_prepost_delegate(FUNC(set_bankptr), &machine));
 }