diff --git a/add_udev_rules.sh b/add_udev_rules.sh
index da50aff..ef35f8f 100755
--- a/add_udev_rules.sh
+++ b/add_udev_rules.sh
@@ -1,4 +1,10 @@
 #!/bin/bash
+
+# Ensure /etc/udev/rules.d directory exists
+if [ ! -d "/etc/udev/rules.d" ]; then
+    mkdir -p /etc/udev/rules.d
+fi
+
 cat <<EOF > /etc/udev/rules.d/20-hw1.rules
 # HW.1, Nano
 SUBSYSTEMS=="usb", ATTRS{idVendor}=="2581", ATTRS{idProduct}=="1b7c|2b7c|3b7c|4b7c", TAG+="uaccess", TAG+="udev-acl"