diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index ca51f0cf27ab..9374bc9a2dd1 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -3,7 +3,7 @@
 #
 
 ifeq ($(CONFIG_PPC64),y)
-EXTRA_CFLAGS	+= -mno-minimal-toc
+CFLAGS_prom_init.o	+= -mno-minimal-toc
 endif
 ifeq ($(CONFIG_PPC32),y)
 CFLAGS_prom_init.o      += -fPIC