diff --git a/lib/bootconfig.c b/lib/bootconfig.c
index 8841554432d5..97f8911ea339 100644
--- a/lib/bootconfig.c
+++ b/lib/bootconfig.c
@@ -901,7 +901,8 @@ static int __init xbc_parse_tree(void)
 }
 
 /**
- * xbc_exit() - Clean up all parsed bootconfig
+ * _xbc_exit() - Clean up all parsed bootconfig
+ * @early: Set true if this is called before budy system is initialized.
  *
  * This clears all data structures of parsed bootconfig on memory.
  * If you need to reuse xbc_init() with new boot config, you can