diff --git a/src/ESP32BootROM.cpp b/src/ESP32BootROM.cpp
index a0027d9..d4bc93e 100644
--- a/src/ESP32BootROM.cpp
+++ b/src/ESP32BootROM.cpp
@@ -21,7 +21,7 @@
 
 // https://docs.espressif.com/projects/esptool/en/latest/esp32/advanced-topics/serial-protocol.html
 
-#if defined(ARDUINO_RASPBERRY_PI_PICO) || defined(__SAMD51__) ||               \
+#if defined(ARDUINO_ARCH_RP2040) || defined(__SAMD51__) ||               \
     defined(TARGET_RP2040) || defined(ARDUINO_ARCH_ESP32) ||                   \
     (defined(ARDUINO_ARCH_SAMD) && defined(ARM_MATH_CM0PLUS))