diff --git a/pfsense_zbx.php b/pfsense_zbx.php
index 63deefc..459d0c0 100644
--- a/pfsense_zbx.php
+++ b/pfsense_zbx.php
@@ -292,6 +292,9 @@ function pfz_services_discovery(){
 
      foreach ($services as $service){
           if (!empty($service['name'])) {
+               // IPerf is only started on demand
+               if ($service['name'] == "iperf")
+                   continue;
 
                $status = get_service_status($service);
                if ($status="") $status = 0;