diff --git a/ui/scripts/cloud.core.resource.js b/ui/scripts/cloud.core.resource.js
index fd11172724c..a0ae9121bf3 100644
--- a/ui/scripts/cloud.core.resource.js
+++ b/ui/scripts/cloud.core.resource.js
@@ -702,7 +702,7 @@ function addZoneWizardValidateZond($thisWizard) {
 	isValid &= validateIp("Internal DNS 1", $thisWizard.find("#add_zone_internaldns1"), $thisWizard.find("#add_zone_internaldns1_errormsg"), false); //required
 	isValid &= validateIp("Internal DNS 2", $thisWizard.find("#add_zone_internaldns2"), $thisWizard.find("#add_zone_internaldns2_errormsg"), true);  //optional	
 	if($thisWizard.find("#step2").find("#add_zone_vlan_container").css("display") != "none") {
-		isValid &= validateString("VLAN Range", $thisWizard.find("#add_zone_startvlan"), $thisWizard.find("#add_zone_startvlan_errormsg"), false); //required
+		isValid &= validateString("VLAN Range", $thisWizard.find("#add_zone_startvlan"), $thisWizard.find("#add_zone_startvlan_errormsg"), true);    //optional
 		isValid &= validateString("VLAN Range", $thisWizard.find("#add_zone_endvlan"), $thisWizard.find("#add_zone_endvlan_errormsg"), true);        //optional
 	}	
 	isValid &= validateCIDR("Guest CIDR", $thisWizard.find("#add_zone_guestcidraddress"), $thisWizard.find("#add_zone_guestcidraddress_errormsg"), false); //required