diff --git a/check_nginx.py b/check_nginx.py
index 205fb87..5c12848 100755
--- a/check_nginx.py
+++ b/check_nginx.py
@@ -44,7 +44,7 @@ def parse_nginx_status(status):
 
 def main():
     parser = argparse.ArgumentParser(description="Check Nginx status using stub_status.")
-    parser.add_argument("--url", default="http://localhost/nginx_status", help="URL to Nginx stub_status.")
+    parser.add_argument("--url", required=True, help="URL to Nginx stub_status.")
     parser.add_argument("--critical-active", type=int, default=0, help="Critical threshold for active connections. Default: disabled")
     parser.add_argument("--warning-active", type=int, default=0, help="Warning threshold for active connections. Default: disabled")
     parser.add_argument("--critical-waiting", type=int, default=0, help="Critical threshold for waiting connections. Default: disabled")
@@ -54,16 +54,16 @@ def main():
     status = check_nginx_status(args.url)
     data = parse_nginx_status(status)
 
-    perfdata = "| active_connections={active_connections};{warning};{critical} waiting={waiting};{warning_waiting};{critical_waiting} accepted={accepted} handled={handled} requests={requests} reading={reading} writing={writing}".format(
-        warning=args.warning_active,
-        critical=args.critical_active,
-        warning_waiting=args.warning_waiting,
-        critical_waiting=args.critical_waiting,
-        **data
-    )
     status_str = "Active connections: {active_connections}, Waiting: {waiting}, Accepted: {accepted}, Handled: {handled}, Requests: {requests}, Reading: {reading}, Writing: {writing}".format(**data)
 
     if args.warning_active > 0 and args.critical_active > 0 and args.warning_waiting > 0 and args.critical_waiting > 0:
+        perfdata = "| active_connections={active_connections};{warning};{critical} waiting={waiting};{warning_waiting};{critical_waiting} accepted={accepted} handled={handled} requests={requests} reading={reading} writing={writing}".format(
+            warning=args.warning_active,
+            critical=args.critical_active,
+            warning_waiting=args.warning_waiting,
+            critical_waiting=args.critical_waiting,
+            **data
+        )
         if data["active_connections"] >= args.critical_active or data["waiting"] >= args.critical_waiting:
             print("CRITICAL:", status_str, perfdata)
             sys.exit(nagios.CRITICAL)
@@ -74,6 +74,9 @@ def main():
             print("OK:", status_str)
             sys.exit(nagios.OK)
     else:
+        perfdata = "| active_connections={active_connections} waiting={waiting} accepted={accepted} handled={handled} requests={requests} reading={reading} writing={writing}".format(
+            **data
+        )
         print("OK:", status_str)
         print('Critical and warning levels disabled.', perfdata)
         sys.exit(nagios.OK)