diff --git a/variants/esp32s3/ELECROW-ThinkNode-G3/platformio.ini b/variants/esp32s3/ELECROW-ThinkNode-G3/platformio.ini
index 4f94f5d39..cfd1095e8 100644
--- a/variants/esp32s3/ELECROW-ThinkNode-G3/platformio.ini
+++ b/variants/esp32s3/ELECROW-ThinkNode-G3/platformio.ini
@@ -11,6 +11,11 @@ build_flags =
   -I variants/esp32s3/ELECROW-ThinkNode-G3
   -mfix-esp32-psram-cache-issue
 
+custom_sdkconfig =
+  ${esp32s3_base.custom_sdkconfig}
+  CONFIG_ETH_ENABLED=y
+  CONFIG_ARDUINO_SELECTIVE_Ethernet=y
+
 lib_ignore =
   Ethernet
 
diff --git a/variants/esp32s3/ELECROW-ThinkNode-M7/platformio.ini b/variants/esp32s3/ELECROW-ThinkNode-M7/platformio.ini
index 68fe68182..65e0b27f0 100644
--- a/variants/esp32s3/ELECROW-ThinkNode-M7/platformio.ini
+++ b/variants/esp32s3/ELECROW-ThinkNode-M7/platformio.ini
@@ -2,7 +2,7 @@
 extends = esp32s3_base
 board = ThinkNode-M7
 
-build_flags = 
+build_flags =
   ${esp32s3_base.build_flags}
   -D ELECROW_ThinkNode_M7
   -D HAS_UDP_MULTICAST=1
@@ -10,7 +10,12 @@ build_flags =
   -I variants/esp32s3/ELECROW-ThinkNode-M7
   -mfix-esp32-psram-cache-issue
 
-lib_ignore = 
+custom_sdkconfig =
+  ${esp32s3_base.custom_sdkconfig}
+  CONFIG_ETH_ENABLED=y
+  CONFIG_ARDUINO_SELECTIVE_Ethernet=y
+
+lib_ignore =
   Ethernet
 
 build_src_filter =