diff --git a/deploy.sh b/deploy.sh
old mode 100644
new mode 100755
index 9d05776..d0968c7
--- a/deploy.sh
+++ b/deploy.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/env nix-shell
-#!nix-shell -i bash -p gum openssl sops ssh-to-age age sshpass envsubst
+#!nix-shell -i bash -p gum openssl sops ssh-to-age age sshpass envsubst pciutils usbutils
 
 prerun_action() {
   echo -e "$1"
@@ -128,10 +128,8 @@ hardware_detection() {
   if ssh_to_host "ls /dev/serial/by-id/ | grep -i 'zigbee'" 2>/dev/null; then
     echo -e "  ✅ Zigbee device found in /dev/serial/by-id/."
     TARGET_ZIGBEE_DEVICE=$(ssh_to_host "ls /dev/serial/by-id/ | grep -i 'zigbee'")
-    TARGET_ZIGBEE="true"
   else
     echo -e "  ℹ️ No Zigbee device found."
-    TARGET_ZIGBEE="false"
   fi
 }
 
@@ -186,7 +184,7 @@ files_generation() {
     sed -i.bak "/# --- frigate devices --- #/d" docker/frigate.nix
   fi
 
-  if [[ "$TARGET_ZIGBEE" == "true" ]]; then
+  if [[ -n "$TARGET_ZIGBEE_DEVICE" ]]; then
     REPLACEMENT="devices:\n              - /dev/serial/by-id/${TARGET_ZIGBEE_DEVICE}:/dev/ttyUSB0"
     sed -i.bak "s|# --- hass devices --- #|$REPLACEMENT|" docker/hass.nix
   else