diff --git a/tasmota/xnrg_12_solaxX1.ino b/tasmota/xnrg_12_solaxX1.ino
index 696b02757..534de4e47 100644
--- a/tasmota/xnrg_12_solaxX1.ino
+++ b/tasmota/xnrg_12_solaxX1.ino
@@ -162,6 +162,7 @@ void solaxX1_RS485Send(uint16_t msgLen)
   solaxX1Serial->write(message, msgLen);
   solaxX1Serial->write(highByte(crc));
   solaxX1Serial->write(lowByte(crc));
+  solaxX1Serial->flush();
   if (PinUsed(GPIO_SOLAXX1_RTS)) {
     digitalWrite(Pin(GPIO_SOLAXX1_RTS), LOW);
   }