diff --git a/boards/tbeam-s3-core.json b/boards/tbeam-s3-core.json
index 4c82a2789..7bda2e5a0 100644
--- a/boards/tbeam-s3-core.json
+++ b/boards/tbeam-s3-core.json
@@ -7,7 +7,8 @@
     "extra_flags": [
       "-DBOARD_HAS_PSRAM",
       "-DLILYGO_TBEAM_S3_CORE",
-      "-DARDUINO_USB_MODE=1",
+      "-DARDUINO_USB_CDC_ON_BOOT=1",
+      "-DARDUINO_USB_MODE=0",
       "-DARDUINO_RUNNING_CORE=1",
       "-DARDUINO_EVENT_RUNNING_CORE=1"
     ],