diff --git a/src/main/io/serial.c b/src/main/io/serial.c
index b2effbb4b7..6fbdad7c0c 100644
--- a/src/main/io/serial.c
+++ b/src/main/io/serial.c
@@ -316,7 +316,7 @@ serialPort_t *openSerialPort(
 #endif
 #ifdef USE_USART5
     case SERIAL_PORT_USART5:
-        serialPort = uartOpen(USART5, callback, baudRate, mode, options);
+        serialPort = uartOpen(UART5, callback, baudRate, mode, options);
         break;
 #endif
 #ifdef USE_USART6