diff --git a/Config.h b/Config.h
index 0dea844..828e231 100644
--- a/Config.h
+++ b/Config.h
@@ -100,6 +100,9 @@
 // Use the modem as a serial repeater for Nextion displays
 #define SERIAL_REPEATER
 
+// Set the baud rate of the modem serial repeater for Nextion displays
+#define SERIAL_REPEATER_BAUD_RATE 9600
+
 // Use the modem as an I2C repeater for OLED displays
 // #define I2C_REPEATER
 
diff --git a/SerialPort.cpp b/SerialPort.cpp
index e6a3454..755bc67 100644
--- a/SerialPort.cpp
+++ b/SerialPort.cpp
@@ -896,7 +896,11 @@ void CSerialPort::start()
   beginInt(1U, SERIAL_SPEED);
 
 #if defined(SERIAL_REPEATER)
-  beginInt(3U, 9600);
+  #if defined(SERIAL_REPEATER_BAUD_RATE)
+    beginInt(3U, SERIAL_REPEATER_BAUD_RATE);
+  #else
+    beginInt(3U, 9600);
+  #endif
 #endif
 #if defined(I2C_REPEATER)
   beginInt(10U, 9600);