diff --git a/variants/esp32s3/ELECROW-ThinkNode-M9/platformio.ini b/variants/esp32s3/ELECROW-ThinkNode-M9/platformio.ini
index 873b97026..aa3226af9 100644
--- a/variants/esp32s3/ELECROW-ThinkNode-M9/platformio.ini
+++ b/variants/esp32s3/ELECROW-ThinkNode-M9/platformio.ini
@@ -35,6 +35,7 @@ build_flags =
   -D CONFIG_DISABLE_HAL_LOCKS=1
   -D HAS_TFT=1
   -D USE_PACKET_API
+  -D USE_PIN_BUZZER=PIN_BUZZER
   -D LV_LVGL_H_INCLUDE_SIMPLE
   -D LV_CONF_INCLUDE_SIMPLE
   -D LV_COMP_CONF_INCLUDE_SIMPLE
@@ -70,6 +71,7 @@ build_flags =
 lib_deps = 
   ${thinknode_m9_base.lib_deps}
   ${device-ui_base.lib_deps}
+  https://github.com/mverch67/ESPWebDAV/archive/a57dedfac243b1c47db90c712db664f896752467.zip