diff --git a/src/mame/drivers/jongkyo.c b/src/mame/drivers/jongkyo.c
index 055f9576517..395ce0a6128 100644
--- a/src/mame/drivers/jongkyo.c
+++ b/src/mame/drivers/jongkyo.c
@@ -469,6 +469,7 @@ void jongkyo_state::machine_start()
 	save_item(NAME(m_videoram2));
 	save_item(NAME(m_rom_bank));
 	save_item(NAME(m_mux_data));
+	save_item(NAME(m_flip_screen));
 }
 
 void jongkyo_state::machine_reset()