diff --git a/Makefile.projbuild b/Makefile.projbuild
index 82c4263e5cd54e282b83e8d0b85fcaae5883c0f3..91f8fef86bec4ed4e6d14f3228b1f09eedeb47be 100644
--- a/Makefile.projbuild
+++ b/Makefile.projbuild
@@ -9,6 +9,8 @@ endif
 BOOT_APP_BIN_FLASH_CMD = $(ESPTOOLPY_SERIAL) write_flash $(BOOT_APP_BIN_OFFSET) $(BOOT_APP_BIN_PATH)
 ESPTOOL_ALL_FLASH_ARGS += $(BOOT_APP_BIN_OFFSET) $(BOOT_APP_BIN_PATH)
 
+CPPFLAGS += -DARDUINO=180 -DESP32=1 -DARDUINO_ARCH_ESP32=1
+
 boot-app0:
 	@echo "Rebooting to APP0"
 	$(BOOT_APP_BIN_FLASH_CMD)