diff --git a/Marlin/pins_BRAINWAVE.h b/Marlin/pins_BRAINWAVE.h
index a1006aec08..6254713410 100644
--- a/Marlin/pins_BRAINWAVE.h
+++ b/Marlin/pins_BRAINWAVE.h
@@ -33,6 +33,8 @@
 
 #define BOARD_NAME         "Brainwave"
 
+#define USBCON 646  // Disable MarlinSerial etc.
+
 //
 // Limit Switches
 //