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-rw-r--r--src/thread/pthread_self.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/thread/pthread_self.c b/src/thread/pthread_self.c
index 23dbaa5e..c50a2fb5 100644
--- a/src/thread/pthread_self.c
+++ b/src/thread/pthread_self.c
@@ -9,7 +9,7 @@ weak_alias(dummy, __pthread_tsd_main);
 static int init_main_thread()
 {
 	__syscall(SYS_rt_sigprocmask, SIG_UNBLOCK,
-		SIGPT_SET, 0, __SYSCALL_SSLEN);
+		SIGPT_SET, 0, _NSIG/8);
 	if (__set_thread_area(TP_ADJ(main_thread)) < 0) return -1;
 	main_thread->canceldisable = libc.canceldisable;
 	main_thread->tsd = (void **)__pthread_tsd_main;