diff --git a/arch/powerpc/cpu/mpc85xx/Makefile b/arch/powerpc/cpu/mpc85xx/Makefile
index f064fee..a481326 100644
--- a/arch/powerpc/cpu/mpc85xx/Makefile
+++ b/arch/powerpc/cpu/mpc85xx/Makefile
@@ -63,6 +63,7 @@
 COBJS-$(CONFIG_OF_LIBFDT) += fdt.o
 COBJS-$(CONFIG_MP)	+= mp.o
 COBJS-$(CONFIG_MPC8536) += mpc8536_serdes.o
+COBJS-$(CONFIG_P1022)	+= p1022_serdes.o
 COBJS-$(CONFIG_PCI)	+= pci.o
 COBJS-$(CONFIG_QE)	+= qe_io.o
 COBJS-$(CONFIG_CPM2)	+= serial_scc.o