diff --git a/pm3 b/pm3
index 268a7e99e..3c69fea61 100755
--- a/pm3
+++ b/pm3
@@ -206,7 +206,7 @@ function get_pm3_list_WSL {
         if [ -e "$DEV" ]; then
 			#prevent soft bricking when using pm3-flash-all on an outdated bootloader
 			if [ $(basename -- "$0") = "pm3-flash-all" ]; then
-				if [ ! $($PSHEXE -command "Get-CimInstance -ClassName Win32_serialport | Where-Object {\$_.DeviceID -eq '$DEV'} | Select -expandproperty PNPDeviceID" 2>/dev/null) = "USB\VID_9AC4&PID_4B8F\ICEMAN" ]; then
+				if [ ! $($PSHEXE -command "Get-CimInstance -ClassName Win32_serialport | Where-Object {\$_.DeviceID -eq '$_comport'} | Select -expandproperty PNPDeviceID" 2>/dev/null) = "USB\VID_9AC4&PID_4B8F\ICEMAN" ]; then
 					echo -e "\033[0;31m[!] Using pm3-flash-all on an oudated bootloader, use pm3-flash-bootrom first!"
 					exit 1
 				fi