diff --git a/HP_printer_555/hp_smart_tank_plus_555_head_clean.ps1 b/HP_printer_555/hp_smart_tank_plus_555_head_clean.ps1
index ee40a3d..3ca66c8 100644
--- a/HP_printer_555/hp_smart_tank_plus_555_head_clean.ps1
+++ b/HP_printer_555/hp_smart_tank_plus_555_head_clean.ps1
@@ -18,7 +18,7 @@ $path_last_run   = "$($location)/hp_clean_last_run"
 $path_log        = "$($location)/hp_clean_log"
 $snmp_ver        = "2c"
 $snmp_community  = "public"
-$snmp_code       = "iso.3.6.1.2.1.43.10.2.1.4.1.1" # OID for printed pages durring actuall sesion
+$snmp_code       = "iso.3.6.1.2.1.43.10.2.1.4.1.1" # OID for printed pages
 $printer_ip      = "" # printer IP
 $url             = "http://$($printer_ip)/DevMgmt/InternalPrintDyn.xml" # url where we need to POST body for start HEAD cleaning.
 $body            = "<ipdyn:InternalPrintDyn xmlns:ipdyn=`"http://www.hp.com/schemas/imaging/con/ledm/internalprintdyn/2008/03/21`" xmlns:copy=`"http://www.hp.com/schemas/imaging/con/copy/2008/07/07`" xmlns:dd=`"http://www.hp.com/schemas/imaging/con/dictionaries/1.0/`" xmlns:dd3=`"http://www.hp.com/schemas/imaging/con/dictionaries/2009/04/06`" xmlns:fw=`"http://www.hp.com/schemas/imaging/con/firewall/2011/01/05`"><ipdyn:JobType>cleaningVerificationPage</ipdyn:JobType></ipdyn:InternalPrintDyn>"