diff --git a/lib/ocpp/v201/connectivity_manager.cpp b/lib/ocpp/v201/connectivity_manager.cpp
index 616c96b22f..11e2e9c16f 100644
--- a/lib/ocpp/v201/connectivity_manager.cpp
+++ b/lib/ocpp/v201/connectivity_manager.cpp
@@ -258,6 +258,10 @@ void ConnectivityManager::init_websocket() {
 
     EVLOG_info << "Open websocket with NetworkConfigurationPriority: " << this->network_configuration_priority + 1
                << " which is configurationSlot " << config_slot_int;
+    if (connection_options.security_profile ==
+        security::OCPP_1_6_ONLY_UNSECURED_TRANSPORT_WITHOUT_BASIC_AUTHENTICATION) {
+        EVLOG_warning << "Using insecure security profile 0 without authentication";
+    }
 
     if (const auto& active_network_profile_cv = ControllerComponentVariables::ActiveNetworkProfile;
         active_network_profile_cv.variable.has_value()) {