diff --git a/legacy/firmware/fsm.c b/legacy/firmware/fsm.c
index 99f9c356a5..629f2dbd5c 100644
--- a/legacy/firmware/fsm.c
+++ b/legacy/firmware/fsm.c
@@ -197,6 +197,12 @@ void fsm_sendFailure(FailureType code, const char *text)
       case FailureType_Failure_InvalidProtocol:
         text = _("Invalid protocol");
         break;
+      case FailureType_Failure_BufferError:
+        text = _("Buffer error");
+        break;
+      case FailureType_Failure_DeviceIsBusy:
+        text = _("Device is busy");
+        break;
       case FailureType_Failure_FirmwareError:
         text = _("Firmware error");
         break;