diff --git a/arch/ia64/include/asm/siginfo.h b/arch/ia64/include/asm/siginfo.h
index 118d4297900319df2d97840fc7149cce0ad8610c..c8fcaa2ac48f88f13bd93e1d25fd3fd5d2031c6a 100644
--- a/arch/ia64/include/asm/siginfo.h
+++ b/arch/ia64/include/asm/siginfo.h
@@ -62,6 +62,7 @@ typedef struct siginfo {
 			int _imm;		/* immediate value for "break" */
 			unsigned int _flags;	/* see below */
 			unsigned long _isr;	/* isr */
+			short _addr_lsb;	/* lsb of faulting address */
 		} _sigfault;
 
 		/* SIGPOLL */