1 files changed, 1 insertions, 1 deletions

diff --git a/arch/ppc/8xx_io/commproc.c b/arch/ppc/8xx_io/commproc.c
index 9d656de0f0f1..752443df5ecf 100644
--- a/arch/ppc/8xx_io/commproc.c
+++ b/arch/ppc/8xx_io/commproc.c
@@ -43,7 +43,7 @@
 ({                                                                      \
         u32 offset = offsetof(immap_t, member);                         \
         void *addr = ioremap (IMAP_ADDR + offset,                       \
-                              sizeof( ((immap_t*)0)->member));          \
+                              FIELD_SIZEOF(immap_t, member));           \
         addr;                                                           \
 })