diff --git a/src/core/killall.c b/src/core/killall.c
index a7828dc0477..ea9bfa105e0 100644
--- a/src/core/killall.c
+++ b/src/core/killall.c
@@ -199,7 +199,7 @@ static int killall(int sig, Set *pids, bool send_sighup) {
         return set_size(pids);
 }
 
-void broadcast_signal(int sig, bool send_sighup, bool wait_for_exit) {
+void broadcast_signal(int sig, bool wait_for_exit, bool send_sighup) {
         sigset_t mask, oldmask;
         Set *pids = NULL;
 
diff --git a/src/core/killall.h b/src/core/killall.h
index bdb73e44bec..986cf432cbc 100644
--- a/src/core/killall.h
+++ b/src/core/killall.h
@@ -21,4 +21,4 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-void broadcast_signal(int sig, bool wait, bool send_sighup);
+void broadcast_signal(int sig, bool wait_for_exit, bool send_sighup);