diff --git a/sys/arch/m68k/include/signal.h b/sys/arch/m68k/include/signal.h
index 659ea7dffa42..a927a2495228 100644
--- a/sys/arch/m68k/include/signal.h
+++ b/sys/arch/m68k/include/signal.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: signal.h,v 1.5 1998/05/25 20:59:02 kleink Exp $	*/
+/*	$NetBSD: signal.h,v 1.6 1998/09/15 23:14:40 thorpej Exp $	*/
 
 /*
  * Copyright (c) 1982, 1986, 1989, 1991 Regents of the University of California.
@@ -54,15 +54,28 @@ typedef int sig_atomic_t;
  * to the handler to allow it to restore state properly if
  * a non-standard exit is performed.
  */
-struct	sigcontext {
+#if defined(__LIBC12_SOURCE__) || defined(_KERNEL)
+struct sigcontext13 {
 	int	sc_onstack;		/* sigstack state to restore */
-	int	sc_mask;		/* signal mask to restore */
+	int	sc_mask;		/* signal mask to restore (old style) */
 	int	sc_sp;			/* sp to restore */
 	int	sc_fp;			/* fp to restore */
 	int	sc_ap;			/* ap to restore */
 	int	sc_pc;			/* pc to restore */
 	int	sc_ps;			/* psl to restore */
 };
+#endif /* __LIBC12_SOURCE__ || _KERNEL */
+
+struct sigcontext {
+	int	sc_onstack;		/* sigstack state to restore */
+	int	__sc_mask13;		/* signal mask to restore (old style) */
+	int	sc_sp;			/* sp to restore */
+	int	sc_fp;			/* fp to restore */
+	int	sc_ap;			/* ap to restore */
+	int	sc_pc;			/* pc to restore */
+	int	sc_ps;			/* psl to restore */
+	sigset_t sc_mask;		/* signal mask to restore (new style) */
+};
 
 #endif	/* !_ANSI_SOURCE && !_POSIX_C_SOURCE && !_XOPEN_SOURCE */
 #endif	/* !_M68K_SIGNAL_H_ */