1 files changed, 1 insertions, 1 deletions

diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h
index 608a04019372..4d9b29c436b2 100644
--- a/include/acpi/actypes.h
+++ b/include/acpi/actypes.h
@@ -517,7 +517,7 @@ typedef u64 acpi_integer;
 
 #define ACPI_TO_POINTER(i)              ACPI_ADD_PTR (void, (void *) NULL,(acpi_size) i)
 #define ACPI_TO_INTEGER(p)              ACPI_PTR_DIFF (p, (void *) NULL)
-#define ACPI_OFFSET(d, f)               (acpi_size) ACPI_PTR_DIFF (&(((d *)0)->f), (void *) NULL)
+#define ACPI_OFFSET(d, f)               ACPI_PTR_DIFF (&(((d *) 0)->f), (void *) NULL)
 #define ACPI_PHYSADDR_TO_PTR(i)         ACPI_TO_POINTER(i)
 #define ACPI_PTR_TO_PHYSADDR(i)         ACPI_TO_INTEGER(i)