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-rw-r--r--src/mame/includes/hcastle.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mame/includes/hcastle.h b/src/mame/includes/hcastle.h
index 6e801e065dd..3be971a8aa4 100644
--- a/src/mame/includes/hcastle.h
+++ b/src/mame/includes/hcastle.h
@@ -43,7 +43,7 @@ public:
required_device<cpu_device> m_audiocpu;
required_device<k007121_device> m_k007121_1;
required_device<k007121_device> m_k007121_2;
- optional_device<k007232_device> m_k007232;
+ required_device<k007232_device> m_k007232;
DECLARE_WRITE8_MEMBER(hcastle_bankswitch_w);
DECLARE_WRITE8_MEMBER(hcastle_soundirq_w);