diff --git a/include/asm-ia64/siginfo.h b/include/asm-ia64/siginfo.h
index d55f139..9294e4b 100644
--- a/include/asm-ia64/siginfo.h
+++ b/include/asm-ia64/siginfo.h
@@ -8,9 +8,7 @@
  *	David Mosberger-Tang <davidm@hpl.hp.com>, Hewlett-Packard Co
  */
 
-#define SI_PAD_SIZE	((SI_MAX_SIZE/sizeof(int)) - 4)
-
-#define SIGEV_PAD_SIZE	((SIGEV_MAX_SIZE/sizeof(int)) - 4)
+#define __ARCH_SI_PREAMBLE_SIZE	(4 * sizeof(int))
 
 #define HAVE_ARCH_SIGINFO_T
 #define HAVE_ARCH_COPY_SIGINFO