diff --git a/cloud/azure/iothubs/monitors-iothubs.tf b/cloud/azure/iothubs/monitors-iothubs.tf
index c2ef38b..0f4e251 100644
--- a/cloud/azure/iothubs/monitors-iothubs.tf
+++ b/cloud/azure/iothubs/monitors-iothubs.tf
@@ -475,6 +475,7 @@ resource "datadog_monitor" "too_many_d2c_telemetry_ingress_nosent" {
   message = coalesce(var.too_many_d2c_telemetry_ingress_nosent_message, var.message)
   type    = "query alert"
 
+  #For this monitor, the avg is needed to smooth the -1 and +1 that we meet regularly. With just a tiny diff like -1 / + 1, if we put 0.3 it should not ring anymore. But there is a bigger difference (exemple 20) The average will be strongly raised and an alert will be triggered.
   query = <<EOQ
     avg(${var.too_many_d2c_telemetry_ingress_nosent_timeframe}):
     default(