diff --git a/class/cdc.c b/class/cdc.c
index cf205bf..3821a90 100644
--- a/class/cdc.c
+++ b/class/cdc.c
@@ -118,9 +118,9 @@ int usb_cdc_process_and_return(USB_CallbackEvent *cbevt) {
     return ret;
 }
 
-void usb_event_callback(USB_CallbackEvent *cbevt) {
-    usb_cdc_process_and_return(cbevt);
-}
+// void usb_event_callback(USB_CallbackEvent *cbevt) {
+//    usb_cdc_process_and_return(cbevt);
+// }
 
 void usb_cdc_write(const uint8_t * data, uint32_t size) {
     if (cdcs.initialized) {