diff --git a/fio.h b/fio.h
index 50a868a..ebf6309 100644
--- a/fio.h
+++ b/fio.h
@@ -362,6 +362,7 @@
 extern int is_backend;
 extern int nr_clients;
 extern int log_syslog;
+extern int status_interval;
 extern const char fio_version_string[];
 
 extern struct thread_data *threads;