diff --git a/arch/blackfin/include/asm/config-pre.h b/arch/blackfin/include/asm/config-pre.h
index d0fd537d88d0bb913c841b4eba68e011960b351d..2d8b293c3ea50825203ff7688985be6bb79b0d35 100644
--- a/arch/blackfin/include/asm/config-pre.h
+++ b/arch/blackfin/include/asm/config-pre.h
@@ -9,9 +9,6 @@
 #ifndef __ASM_BLACKFIN_CONFIG_PRE_H__
 #define __ASM_BLACKFIN_CONFIG_PRE_H__
 
-/* Misc helper functions */
-#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
-
 /* Bootmode defines -- your config needs to select this via CONFIG_BFIN_BOOT_MODE.
  * Depending on your cpu, some of these may not be valid, check your HRM.
  * The actual values here are meaningless as long as they're unique.
diff --git a/arch/powerpc/cpu/ppc4xx/speed.c b/arch/powerpc/cpu/ppc4xx/speed.c
index 7e077d5a9f28a5216219d79ab6adfc0dd5e69466..4baee7774c50a976aadb4f38b2ee0a2798d91c15 100644
--- a/arch/powerpc/cpu/ppc4xx/speed.c
+++ b/arch/powerpc/cpu/ppc4xx/speed.c
@@ -19,8 +19,6 @@ DECLARE_GLOBAL_DATA_PTR;
 #define DEBUGF(fmt,args...)
 #endif
 
-#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
-
 #if defined(CONFIG_405GP)
 
 void get_sys_info (PPC4xx_SYS_INFO * sysInfo)