diff --git a/setup.sh b/setup.sh
index d90fb7c..740e48a 100644
--- a/setup.sh
+++ b/setup.sh
@@ -103,22 +103,35 @@ ROLE=""
 NETBIRD_KEY=""
 NETBIRD_IP=""
 NETBIRD_PORT=""
+parse_args() {
+  local opts
+  if ! opts=$(getopt \
+    -o u:k:s:m:v:r:n:i:p:h \
+    --long user:,sshkey:,ssh-ip:,monitor-ip:,vector:,role:,netbird-key:,netbird-ip:,netbird-port:,help \
+    -n "$0" -- "$@"); then
+    usage
+    exit 1
+  fi
+  eval set -- "$opts"
+  while true; do
+    case "$1" in
+      -u|--user) USERNAME="$2"; shift 2 ;;
+      -k|--sshkey) SSH_KEY="$2"; shift 2 ;;
+      -s|--ssh-ip) SSH_ALLOWED_IP="$2"; shift 2 ;;
+      -m|--monitor-ip) MONITOR_IP="$2"; shift 2 ;;
+      -v|--vector) VECTOR_ENDPOINT="$2"; shift 2 ;;
+      -r|--role) ROLE="$2"; shift 2 ;;
+      -n|--netbird-key) NETBIRD_KEY="$2"; shift 2 ;;
+      -i|--netbird-ip) NETBIRD_IP="$2"; shift 2 ;;
+      -p|--netbird-port) NETBIRD_PORT="$2"; shift 2 ;;
+      -h|--help) usage; exit 0 ;;
+      --) shift; break ;;
+      *) log "Unknown parameter: $1"; usage; exit 1 ;;
+    esac
+  done
+}
 
-while [[ $# -gt 0 ]]; do
-  case "$1" in
-    -u|--user) USERNAME="$2"; shift 2;;
-    -k|--sshkey) SSH_KEY="$2"; shift 2;;
-    -s|--ssh-ip) SSH_ALLOWED_IP="$2"; shift 2;;
-    -m|--monitor-ip) MONITOR_IP="$2"; shift 2;;
-    -v|--vector) VECTOR_ENDPOINT="$2"; shift 2;;
-    -r|--role) ROLE="$2"; shift 2;;
-    -n|--netbird-key) NETBIRD_KEY="$2"; shift 2;;
-    -i|--netbird-ip) NETBIRD_IP="$2"; shift 2;;
-    -p|--netbird-port) NETBIRD_PORT="$2"; shift 2;;
-    -h|--help) usage; exit 0;;
-    *) log "Unknown parameter: $1"; usage; exit 1;;
-  esac
-done
+parse_args "$@"
 
 if [[ -z "$USERNAME" || -z "$SSH_KEY" ]]; then
   usage