diff --git a/pax/src/pax.c b/pax/src/pax.c

index 20817d1..b7c1bcf 100644

--- a/pax/src/pax.c

+++ b/pax/src/pax.c

@@ -403,27 +403,27 @@ gen_init (void)

   if ((sigaction (SIGHUP, &n_hand, &o_hand) < 0) &&

       (o_hand.sa_handler == SIG_IGN) &&

-      (sigaction (SIGHUP, &o_hand, &o_hand) < 0))

+      (sigaction (SIGHUP, &o_hand, NULL) < 0))

     goto out;

   if ((sigaction (SIGTERM, &n_hand, &o_hand) < 0) &&

       (o_hand.sa_handler == SIG_IGN) &&

-      (sigaction (SIGTERM, &o_hand, &o_hand) < 0))

+      (sigaction (SIGTERM, &o_hand, NULL) < 0))

     goto out;

   if ((sigaction (SIGINT, &n_hand, &o_hand) < 0) &&

       (o_hand.sa_handler == SIG_IGN) &&

-      (sigaction (SIGINT, &o_hand, &o_hand) < 0))

+      (sigaction (SIGINT, &o_hand, NULL) < 0))

     goto out;

   if ((sigaction (SIGQUIT, &n_hand, &o_hand) < 0) &&

       (o_hand.sa_handler == SIG_IGN) &&

-      (sigaction (SIGQUIT, &o_hand, &o_hand) < 0))

+      (sigaction (SIGQUIT, &o_hand, NULL) < 0))

     goto out;

   if ((sigaction (SIGXCPU, &n_hand, &o_hand) < 0) &&

       (o_hand.sa_handler == SIG_IGN) &&

-      (sigaction (SIGXCPU, &o_hand, &o_hand) < 0))

+      (sigaction (SIGXCPU, &o_hand, NULL) < 0))

     goto out;

   n_hand.sa_handler = SIG_IGN;