diff --git a/drivers/message/fusion/mptbase.h b/drivers/message/fusion/mptbase.h
index d83ea96fe135..caadc68c3000 100644
--- a/drivers/message/fusion/mptbase.h
+++ b/drivers/message/fusion/mptbase.h
@@ -923,7 +923,7 @@ extern struct proc_dir_entry	*mpt_proc_root_dir;
 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
 #endif		/* } __KERNEL__ */
 
-#if defined(__alpha__) || defined(__sparc_v9__) || defined(__ia64__) || defined(__x86_64__) || defined(__powerpc__)
+#ifdef CONFIG_64BIT
 #define CAST_U32_TO_PTR(x)	((void *)(u64)x)
 #define CAST_PTR_TO_U32(x)	((u32)(u64)x)
 #else