diff --git a/lib/TasmotaSerial-2.4.0/src/TasmotaSerial.cpp b/lib/TasmotaSerial-2.4.0/src/TasmotaSerial.cpp
index c2672f514..5ffcaf390 100644
--- a/lib/TasmotaSerial-2.4.0/src/TasmotaSerial.cpp
+++ b/lib/TasmotaSerial-2.4.0/src/TasmotaSerial.cpp
@@ -218,6 +218,7 @@ int TasmotaSerial::available()
 #else
 #define TM_SERIAL_WAIT_SND { while (ESP.getCycleCount() < (wait + start)); wait += m_bit_time; }
 #define TM_SERIAL_WAIT_RCV { while (ESP.getCycleCount() < (wait + start)); wait += m_bit_time; }
+#define TM_SERIAL_WAIT_RCV_LOOP { while (ESP.getCycleCount() < (wait + start)); }
 #endif
 
 size_t TasmotaSerial::write(uint8_t b)