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-rw-r--r--src/emu/watchdog.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/emu/watchdog.h b/src/emu/watchdog.h
index de524f2f716..acebfb96818 100644
--- a/src/emu/watchdog.h
+++ b/src/emu/watchdog.h
@@ -11,6 +11,10 @@
#pragma once
+#ifndef __EMU_H__
+#error Dont include this file directly; include emu.h instead.
+#endif
+
#ifndef __WATCHDOG_H__
#define __WATCHDOG_H__