diff --git a/hmp.h b/hmp.h
index 49d9662..9322b7f 100644
--- a/hmp.h
+++ b/hmp.h
@@ -29,5 +29,6 @@
 void hmp_stop(Monitor *mon, const QDict *qdict);
 void hmp_system_reset(Monitor *mon, const QDict *qdict);
 void hmp_system_powerdown(Monitor *mon, const QDict *qdict);
+void hmp_cpu(Monitor *mon, const QDict *qdict);
 
 #endif