diff --git a/Src/usbd_conf.c b/Src/usbd_conf.c
index ff4c81c..ddff08e 100644
--- a/Src/usbd_conf.c
+++ b/Src/usbd_conf.c
@@ -792,6 +792,10 @@ static void SystemClockConfig_Resume(void)
 {
   SystemClock_CustomConfig(false, true);
 }
+
+// Unused callback
+void USBD_LL_Init_Done(void) {}
+
 /* USER CODE END 5 */
 
 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/canokey-core b/canokey-core
index a4bba30..ffeddfd 160000
--- a/canokey-core
+++ b/canokey-core
@@ -1 +1 @@
-Subproject commit a4bba3032bbf1a9c235b6e8f19f38aa445da90f7
+Subproject commit ffeddfd8633c1bbe8184fee0558e5fef1a21dc72