diff --git a/platformio.ini b/platformio.ini
index a5fffdc1..2adeccab 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -46,6 +46,7 @@
 default_envs = 
   ; esp32_4MB_S     ;; experimental, optimized for speed
   esp32_4MB_M  ; recommended default
+  esp32_4MB_eth_M
   esp32_4MB_M_debug
   esp32_4MB_XL
   ; esp32_16MB_S    ;; experimental, optimized for speed