diff --git a/Adafruit_SPIDevice.h b/Adafruit_SPIDevice.h
index 498c583..d327bcb 100644
--- a/Adafruit_SPIDevice.h
+++ b/Adafruit_SPIDevice.h
@@ -74,7 +74,8 @@ typedef uint32_t BusIO_PortMask;
 
 #elif (defined(__arm__) || defined(ARDUINO_FEATHER52)) &&                      \
     !defined(ARDUINO_ARCH_MBED) && !defined(ARDUINO_ARCH_RP2040) &&            \
-    !defined(ARDUINO_SILABS)
+    !defined(ARDUINO_SILABS) && !defined(ARDUINO_UNOR4_MINIMA) &&              \
+    !defined(ARDUINO_UNOR4_WIFI)
 typedef volatile uint32_t BusIO_PortReg;
 typedef uint32_t BusIO_PortMask;
 #if !defined(__ASR6501__) && !defined(__ASR6502__)