1 files changed, 2 insertions, 2 deletions
diff --git a/src/shared/signal-util.h b/src/shared/signal-util.h
index ddf64cda7..5e6eb50b0 100644
--- a/src/shared/signal-util.h
+++ b/src/shared/signal-util.h
@@ -32,8 +32,8 @@ int ignore_signals(int sig, ...);
 int default_signals(int sig, ...);
 int sigaction_many(const struct sigaction *sa, ...);
 
-void sigset_add_many(sigset_t *ss, ...);
-int sigprocmask_many(int how, ...);
+int sigset_add_many(sigset_t *ss, ...);
+int sigprocmask_many(int how, sigset_t *old, ...);
 
 const char *signal_to_string(int i) _const_;
 int signal_from_string(const char *s) _pure_;