diff --git a/pm3 b/pm3
index 429dfaba6..bb0ac2455 100755
--- a/pm3
+++ b/pm3
@@ -156,10 +156,7 @@ function get_pm3_list_WSL {
     # Need to look for this first,  the call to Win32_serialport "crashes" then native bt serial port.  Don't ask why.
     #BT direct SERIAL PORTS (COM)
     if $FINDBTRFCOMM; then
-        for DEV in $(powershell.exe -command "Get-CimInstance -ClassName Win32_PnPEntity | Where-Object Caption -like 'Standard Serial over Bluetooth link (COM*' | Select Name" 2> /dev/null | awk 'match($0,/COM([0-9]+)/,m){print m[1]}'); do
-
-            DEV=${DEV/ */}
-            DEV="/dev/ttyS${DEV#COM}"
+        for DEV in $(powershell.exe -command "Get-CimInstance -ClassName Win32_PnPEntity | Where-Object Caption -like 'Standard Serial over Bluetooth link (COM*' | Select Name" 2> /dev/null | sed -nr 's#.*\bCOM([0-9]+)\b.*#/dev/ttyS\1#p'); do
             # ttyS counterpart takes some more time to appear
             if [ -e "$DEV" ]; then
                 PM3LIST+=("$DEV")
@@ -176,9 +173,7 @@ function get_pm3_list_WSL {
     fi
 
     # Normal SERIAL PORTS (COM)
-    for DEV in $(powershell.exe -command "Get-CimInstance -ClassName Win32_serialport | Where-Object PNPDeviceID -like '*VID_9AC4&PID_4B8F*' | Select DeviceID" 2>/dev/null | awk '/^COM/{print $1}'); do
-        DEV=${DEV/ */}
-        DEV="/dev/ttyS${DEV#COM}"
+    for DEV in $(powershell.exe -command "Get-CimInstance -ClassName Win32_serialport | Where-Object PNPDeviceID -like '*VID_9AC4&PID_4B8F*' | Select DeviceID" 2>/dev/null | sed -nr 's#^COM([0-9]+)\b#/dev/ttyS\1#p'); do
         # ttyS counterpart takes some more time to appear
         if [ -e "$DEV" ]; then
             PM3LIST+=("$DEV")
@@ -194,9 +189,7 @@ function get_pm3_list_WSL {
 
     #white BT dongle SERIAL PORTS (COM)
     if $FINDBTDONGLE; then
-        for DEV in $(powershell.exe -command "Get-CimInstance -ClassName Win32_serialport | Where-Object PNPDeviceID -like '*VID_10C4&PID_EA60*' | Select DeviceID" 2>/dev/null | awk '/^COM/{print $1}'); do
-            DEV=${DEV/ */}
-            DEV="/dev/ttyS${DEV#COM}"
+        for DEV in $(powershell.exe -command "Get-CimInstance -ClassName Win32_serialport | Where-Object PNPDeviceID -like '*VID_10C4&PID_EA60*' | Select DeviceID" 2>/dev/null | sed -nr 's#^COM([0-9]+)\b#/dev/ttyS\1#p'); do
             # ttyS counterpart takes some more time to appear
             if [ -e "$DEV" ]; then
                 PM3LIST+=("$DEV")