diff --git a/ports/raspberrypi/common-hal/wifi/Radio.c b/ports/raspberrypi/common-hal/wifi/Radio.c
index fcedcb2ce2..0459841b47 100644
--- a/ports/raspberrypi/common-hal/wifi/Radio.c
+++ b/ports/raspberrypi/common-hal/wifi/Radio.c
@@ -162,7 +162,7 @@ void common_hal_wifi_radio_stop_station(wifi_radio_obj_t *self) {
     bindings_cyw43_wifi_enforce_pm();
 }
 
-void common_hal_wifi_radio_start_ap(wifi_radio_obj_t *self, uint8_t *ssid, size_t ssid_len, uint8_t *password, size_t password_len, uint8_t channel, uint8_t authmode, uint8_t max_connections) {
+void common_hal_wifi_radio_start_ap(wifi_radio_obj_t *self, uint8_t *ssid, size_t ssid_len, uint8_t *password, size_t password_len, uint8_t channel, uint32_t authmodes, uint8_t max_connections) {
     if (!common_hal_wifi_radio_get_enabled(self)) {
         mp_raise_RuntimeError(translate("Wifi is not enabled"));
     }