diff --git a/include/sysmenu/hotsw/common/hotsw.h b/include/sysmenu/hotsw/common/hotsw.h
index 48c3d28c..b968b9b4 100644
--- a/include/sysmenu/hotsw/common/hotsw.h
+++ b/include/sysmenu/hotsw/common/hotsw.h
@@ -11,6 +11,10 @@
 extern "C" {
 #endif
 
+#ifdef SDK_ARM7
+#define SYSM_HOTSW_ENABLE_ROMEMU
+#endif // SDK_ARM7
+
 // Function prototype -------------------------------------------------------
 // 活栓挿抜処理の初期化
 void HOTSW_Init(void);