diff --git a/platformio.ini b/platformio.ini
index cf25f93..6580e7c 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -12,7 +12,7 @@
 platform = espressif8266
 board = d1_mini
 framework = arduino
-build_flags = -D PIO_FRAMEWORK_ARDUINO_LWIP2_LOW_MEMORY
+build_flags = -D PIO_FRAMEWORK_ARDUINO_LWIP2_LOW_MEMORY -D BME680
 ; build_flag needs define the Bosch sensor...
 ; -D BMP280
 ;or