diff --git a/Marlin/src/lcd/anycubic_touchscreen.cpp b/Marlin/src/lcd/anycubic_touchscreen.cpp
index 880eb06d..3ea00327 100755
--- a/Marlin/src/lcd/anycubic_touchscreen.cpp
+++ b/Marlin/src/lcd/anycubic_touchscreen.cpp
@@ -1078,6 +1078,8 @@ void AnycubicTouchscreenClass::GetCommandFromTFT()
     
           if( (int)(strtod(&TFTcmdbuffer[TFTbufindw][TFTstrchr_pointer - TFTcmdbuffer[TFTbufindw] + 1], NULL)) != checksum)
           {
+              HARDWARE_SERIAL_ERROR_START;
+              HardwareSerial.flush();
               HARDWARE_SERIAL_ERROR_START;
               HardwareSerial.flush();
               serial3_count = 0;