diff --git a/LUFA/Drivers/USB/Core/XMEGA/USBInterrupt_XMEGA.c b/LUFA/Drivers/USB/Core/XMEGA/USBInterrupt_XMEGA.c
index b85f301d5e..51f35a6686 100644
--- a/LUFA/Drivers/USB/Core/XMEGA/USBInterrupt_XMEGA.c
+++ b/LUFA/Drivers/USB/Core/XMEGA/USBInterrupt_XMEGA.c
@@ -36,7 +36,7 @@
 
 void USB_INT_DisableAllInterrupts(void)
 {
-	USB.INTCTRLA    &= USB_INTLVL_gm;
+	USB.INTCTRLA    &= ~USB_INTLVL_gm;
 	USB.INTCTRLB     = 0;
 }