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-rw-r--r--src/mame/includes/subs.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/mame/includes/subs.h b/src/mame/includes/subs.h
index 8cc15820021..4be02524ac5 100644
--- a/src/mame/includes/subs.h
+++ b/src/mame/includes/subs.h
@@ -5,6 +5,8 @@
Atari Subs hardware
*************************************************************************/
+#ifndef MAME_INCLUDES_SUBS_H
+#define MAME_INCLUDES_SUBS_H
#include "sound/discrete.h"
@@ -70,4 +72,6 @@ public:
/*----------- defined in audio/subs.c -----------*/
-DISCRETE_SOUND_EXTERN( subs );
+DISCRETE_SOUND_EXTERN( subs_discrete );
+
+#endif // MAME_INCLUDES_SUBS_H