diff --git a/arch/powerpc/cpu/Makefile b/arch/powerpc/cpu/Makefile
index d630abe..88b5298 100644
--- a/arch/powerpc/cpu/Makefile
+++ b/arch/powerpc/cpu/Makefile
@@ -1,3 +1,3 @@
-ifneq ($(filter mpc83xx mpc85xx mpc86xx,$(CPU)),)
-obj-y += mpc8xxx/
-endif
+obj-$(CONFIG_MPC83xx) += mpc8xxx/
+obj-$(CONFIG_MPC85xx) += mpc8xxx/
+obj-$(CONFIG_MPC86xx) += mpc8xxx/
diff --git a/arch/powerpc/cpu/mpc8xxx/Makefile b/arch/powerpc/cpu/mpc8xxx/Makefile
index f66ee2e..e95539e 100644
--- a/arch/powerpc/cpu/mpc8xxx/Makefile
+++ b/arch/powerpc/cpu/mpc8xxx/Makefile
@@ -19,10 +19,8 @@
 obj-$(CONFIG_FSL_LAW) += law.o
 
 else
-
-ifneq ($(CPU),mpc83xx)
-obj-y	+= cpu.o
-endif
+obj-$(CONFIG_MPC85xx) += cpu.o
+obj-$(CONFIG_MPC86xx) += cpu.o
 
 obj-$(CONFIG_OF_LIBFDT) += fdt.o
 obj-$(CONFIG_FSL_LBC) += fsl_lbc.o