diff --git a/lib/libc/arch/sparc64/gen/swapcontext.S b/lib/libc/arch/sparc64/gen/swapcontext.S
index 7e1048c348d9..f736da8497d5 100644
--- a/lib/libc/arch/sparc64/gen/swapcontext.S
+++ b/lib/libc/arch/sparc64/gen/swapcontext.S
@@ -1,4 +1,4 @@
-/*	$NetBSD: swapcontext.S,v 1.2 2003/01/18 11:17:45 thorpej Exp $	*/
+/*	$NetBSD: swapcontext.S,v 1.3 2003/05/23 18:20:14 petrov Exp $	*/
 
 /*-
  * Copyright (c) 2001 The NetBSD Foundation, Inc.
@@ -39,9 +39,11 @@
 #include "SYS.h"
 
 #if defined(LIBC_SCCS) && !defined(lint)
-	RCSID("$NetBSD: swapcontext.S,v 1.2 2003/01/18 11:17:45 thorpej Exp $")
+	RCSID("$NetBSD: swapcontext.S,v 1.3 2003/05/23 18:20:14 petrov Exp $")
 #endif /* LIBC_SCCS && !lint */
 
+	.register	%g2,#scratch
+
 ENTRY(swapcontext)
 	mov	%o0, %o2			/* must save pointer */
 	mov	%o1, %o3			/* must save pointer */