diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index 4a35703..ab5d565 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -39,6 +39,7 @@
 COBJS-$(CONFIG_IXP_SERIAL) += serial_ixp.o
 COBJS-$(CONFIG_KS8695_SERIAL) += serial_ks8695.o
 COBJS-$(CONFIG_LPC2292_SERIAL) += serial_lpc2292.o
+COBJS-$(CONFIG_LH7A40X_SERIAL) += serial_lh7a40x.o
 COBJS-$(CONFIG_MAX3100_SERIAL) += serial_max3100.o
 COBJS-$(CONFIG_MX31_UART) += serial_mx31.o
 COBJS-$(CONFIG_NETARM_SERIAL) += serial_netarm.o