diff --git a/esxi-scripts/iscsi-sys-vm-shutdown-verify.ps1 b/esxi-scripts/iscsi-sys-vm-shutdown-verify.ps1
index be3c87b0..e3cf357a 100755
--- a/esxi-scripts/iscsi-sys-vm-shutdown-verify.ps1
+++ b/esxi-scripts/iscsi-sys-vm-shutdown-verify.ps1
@@ -15,14 +15,14 @@ $ESXI = Connect-VIServer -Server $args[0] -Protocol https -User $ESXiUsername -P
 # }
 
 Do {
-	$poff = yes
+	$poff = 'yes'
 	$VMLIST = Get-Datastore | Where {$_.Name -like '*iSCSI-SYS*'} | Get-VM
 	Foreach ($VM in $VMLIST) { 
-		if ((Get-VM $VM).PowerState -eq 'PoweredOn') {
-	        $poff = no
+		if ((Get-VM $VM).PowerState -match 'PoweredOn') {
+	        $poff = 'no'
 	    }
 	}
-} Until ($poff -eq yes)
+} Until ($poff -match 'yes')