diff --git a/src/coredump/coredumpctl.c b/src/coredump/coredumpctl.c
index 4616a7e3e4..9323e9d028 100644
--- a/src/coredump/coredumpctl.c
+++ b/src/coredump/coredumpctl.c
@@ -994,7 +994,7 @@ finish:
 }
 
 static int check_units_active(void) {
-        _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL;
+        _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;