2 files changed, 3 insertions, 3 deletions
diff --git a/src/basic/signal-util.c b/src/basic/signal-util.c
index 84cf42b285..d24730d439 100644
--- a/src/basic/signal-util.c
+++ b/src/basic/signal-util.c
@@ -159,7 +159,7 @@ int sigset_add_many(sigset_t *ss, ...) {
         return r;
 }
 
-int sigprocmask_many(int how, ...) {
+int sigprocmask_many(int how, sigset_t *old, ...) {
         va_list ap;
         sigset_t ss;
         int r;
@@ -174,7 +174,7 @@ int sigprocmask_many(int how, ...) {
         if (r < 0)
                 return r;
 
-        if (sigprocmask(how, &ss, NULL) < 0)
+        if (sigprocmask(how, &ss, old) < 0)
                 return -errno;
 
         return 0;
diff --git a/src/basic/signal-util.h b/src/basic/signal-util.h
index 9dc8a28726..5e6eb50b07 100644
--- a/src/basic/signal-util.h
+++ b/src/basic/signal-util.h
@@ -33,7 +33,7 @@ int default_signals(int sig, ...);
 int sigaction_many(const struct sigaction *sa, ...);
 
 int sigset_add_many(sigset_t *ss, ...);
-int sigprocmask_many(int how, ...);
+int sigprocmask_many(int how, sigset_t *old, ...);
 
 const char *signal_to_string(int i) _const_;
 int signal_from_string(const char *s) _pure_;