1 files changed, 1 insertions, 1 deletions
diff --git a/main.c b/main.c
index 2a835ea..d9ddd82 100644
--- a/main.c
+++ b/main.c
@@ -308,7 +308,7 @@ main (argc, argv, envp)
 
 #ifdef	POSIX
   sigemptyset (&fatal_signal_set);
-#define	ADD_SIG(sig)	sigaddset (sig, &fatal_signal_set)
+#define	ADD_SIG(sig)	sigaddset (&fatal_signal_set, sig)
 #else
 #ifndef	USG
   fatal_signal_mask = 0;