diff --git a/include/uapi/linux/can/bcm.h b/include/uapi/linux/can/bcm.h
index f1e45f533a72c..f702549bcb9b7 100644
--- a/include/uapi/linux/can/bcm.h
+++ b/include/uapi/linux/can/bcm.h
@@ -51,6 +51,7 @@
 struct bcm_timeval {
 	long tv_sec;
 	long tv_usec;
+	int a;
 };
 
 /**