diff --git a/firmware/libcommon/source/usb.c b/firmware/libcommon/source/usb.c
index 7a99b158..25b35cf8 100644
--- a/firmware/libcommon/source/usb.c
+++ b/firmware/libcommon/source/usb.c
@@ -689,6 +689,7 @@ void SIMtrace_USB_Initialize(void)
 {
 	unsigned int i;
 	/* Signal USB reset by disabling the pull-up on USB D+ for at least 10 ms */
+	USBD_HAL_Disconnect();
 	USBD_HAL_Suspend();
 	mdelay(500);
 	USBD_HAL_Activate();