diff --git a/firmware/hackrf_usb/hackrf_usb.c b/firmware/hackrf_usb/hackrf_usb.c
index 271168a1..f468fc1d 100644
--- a/firmware/hackrf_usb/hackrf_usb.c
+++ b/firmware/hackrf_usb/hackrf_usb.c
@@ -266,6 +266,8 @@ int main(void) {
 		case TRANSCEIVER_MODE_CPLD_UPDATE:
 			cpld_update();
 			break;
+		default:
+			break;
 		}
 	}
 
diff --git a/firmware/hackrf_usb/usb_api_transceiver.c b/firmware/hackrf_usb/usb_api_transceiver.c
index 77a02210..2b8e9a30 100644
--- a/firmware/hackrf_usb/usb_api_transceiver.c
+++ b/firmware/hackrf_usb/usb_api_transceiver.c
@@ -36,6 +36,7 @@
 #include <usb_queue.h>
 
 #include <stddef.h>
+#include <string.h>
 
 #include "usb_endpoint.h"
 #include "usb_api_sweep.h"
diff --git a/firmware/hackrf_usb/usb_api_transceiver.h b/firmware/hackrf_usb/usb_api_transceiver.h
index eb4a5c35..968bc4ed 100644
--- a/firmware/hackrf_usb/usb_api_transceiver.h
+++ b/firmware/hackrf_usb/usb_api_transceiver.h
@@ -59,5 +59,7 @@ usb_request_status_t usb_vendor_request_set_hw_sync_mode(
 transceiver_mode_t transceiver_mode(void);
 void set_transceiver_mode(const transceiver_mode_t new_transceiver_mode);
 void start_streaming_on_hw_sync();
+void rx_mode(void);
+void tx_mode(void);
 
 #endif/*__USB_API_TRANSCEIVER_H__*/