diff --git a/include/linux/Kbuild b/include/linux/Kbuild
index bcf875e..ad7f71a 100644
--- a/include/linux/Kbuild
+++ b/include/linux/Kbuild
@@ -137,6 +137,7 @@
 header-y += raw.h
 header-y += resource.h
 header-y += rose.h
+header-y += serial_reg.h
 header-y += smbno.h
 header-y += snmp.h
 header-y += sockios.h