diff --git a/src/RS485.h b/src/RS485.h
index 787d66c..a99e0e6 100644
--- a/src/RS485.h
+++ b/src/RS485.h
@@ -40,7 +40,6 @@
 #define RS485_DEFAULT_DE_PIN A4
 #define RS485_DEFAULT_RE_PIN A5
 #elif defined(ARDUINO_UNOR4_WIFI) || defined(ARDUINO_UNOR4_MINIMA)
-#define SERIAL_PORT_HARDWARE Serial1
 #define RS485_DEFAULT_DE_PIN 8
 #define RS485_DEFAULT_RE_PIN 7
 #else
@@ -50,6 +49,8 @@
 #endif
 #endif
 
+#define SERIAL_PORT_HARDWARE Serial1
+
 #ifdef CUSTOM_RS485_DEFAULT_DE_PIN
 # define RS485_DEFAULT_DE_PIN CUSTOM_RS485_DEFAULT_DE_PIN
 #endif