diff --git a/doc/md/Installation_Instructions/Windows-Installation-Instructions.md b/doc/md/Installation_Instructions/Windows-Installation-Instructions.md
index eacdc4b62..db9a9084f 100644
--- a/doc/md/Installation_Instructions/Windows-Installation-Instructions.md
+++ b/doc/md/Installation_Instructions/Windows-Installation-Instructions.md
@@ -166,3 +166,4 @@ Or, by specifying the COM port manually:
 client/proxmark3 /dev/ttySX
 ```
 
+Note that it may take a quite long time for a freshly plugged Proxmark3 to be visible on a WSL /dev/ttySX port.
diff --git a/proxmark3.sh b/proxmark3.sh
index 39eb80779..b45887a23 100755
--- a/proxmark3.sh
+++ b/proxmark3.sh
@@ -51,6 +51,10 @@ function wait4proxmark_WSL {
         fi
         sleep .1
     done
+    if [ -e "$PM3" ] && ! [ -w "$PM3" ]; then
+        echo "We need to give current user read/write access to $PM3"
+        sudo chmod 666 "$PM3"
+    fi
     echo $PM3
 }