diff --git a/matemat/webserver/template/template.py b/matemat/webserver/template/template.py
index e42555f..f9bbf4b 100644
--- a/matemat/webserver/template/template.py
+++ b/matemat/webserver/template/template.py
@@ -30,7 +30,7 @@ def render(name: str, **kwargs):
     config = get_app_config()
     template: jinja2.Template = __jinja_env.get_template(name)
     wsacl = netaddr.IPSet([addr.strip() for addr in config.get('BarcodeWebsocketAcl', '').split(',')])
-    if config.get('BarcodeWebsocketUrl', '') and request.remote_addr in wsacl:
+    if config.get('BarcodeWebsocketUrl', '') and hasattr(request, 'remote_addr') and request.remote_addr in wsacl:
         bcwebsocket = config.get('BarcodeWebsocketUrl')
     else:
         bcwebsocket = None