diff --git a/nagios-nrpe/files/check_async b/nagios-nrpe/files/check_async
index 15a6bf71..5ff8ad24 100644
--- a/nagios-nrpe/files/check_async
+++ b/nagios-nrpe/files/check_async
@@ -1,5 +1,9 @@
 #!/bin/bash
 
+### WARNING #######################################
+# THIS IS A WORK IN PROGRESS AND IT IS NOT USABLE #
+###################################################
+
 VERSION="21.04"
 readonly VERSION