diff --git a/cores/arduino/main.cpp b/cores/arduino/main.cpp
index f4346ec..434cd40 100644
--- a/cores/arduino/main.cpp
+++ b/cores/arduino/main.cpp
@@ -37,7 +37,6 @@ int main(void)
 	initVariant();
 
 #if defined(USBCON)
-	setupUSB();
 	USBDevice.attach();
 #endif