diff --git a/platformio.ini b/platformio.ini
index 7c5b02a60a..0e303f8d30 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -2490,7 +2490,8 @@ build_unflags = ${env:esp32S3_8MB_M.build_unflags}   ;; use the same as "normal"
 build_flags = ${common.build_flags} ${esp32s3.build_flags} -Wno-misleading-indentation -Wno-format-truncation
   ${common_mm.build_flags_S}
   -D WLED_RELEASE_NAME=matrixportal_esp32s3
-  -DARDUINO_USB_MODE=1 -DARDUINO_USB_CDC_ON_BOOT=1 -DARDUINO_USB_MSC_ON_BOOT=0 -DARDUINO_USB_DFU_ON_BOOT=1 ;; for Hardware-CDC USB mode
+  ; Serial debug enabled  -DARDUINO_USB_MODE=1 -DARDUINO_USB_CDC_ON_BOOT=1 -DARDUINO_USB_MSC_ON_BOOT=0 -DARDUINO_USB_DFU_ON_BOOT=1 ;; for Hardware-CDC USB mode
+  -D ARDUINO_USB_CDC_ON_BOOT=0
   -D WLED_DISABLE_ADALIGHT     ;; disables serial protocols - recommended for Hardware-CDC USB (Serial RX will receive junk commands when RX pin is unconnected, unless its pulled down by resistor)
   ${common_mm.animartrix_build_flags}
   ${common_mm.build_disable_sync_interfaces}