diff --git a/DNS-manual-mode.md b/DNS-manual-mode.md
index 91d47bf..9de808c 100644
--- a/DNS-manual-mode.md
+++ b/DNS-manual-mode.md
@@ -55,5 +55,3 @@ acme.sh --renew -d example.com  --dns \
 ```
 
 
-### Known issues:
-[The supported validation types are: dns-01 , but you specified: http-01](https://github.com/Neilpang/acme.sh/issues/1433)
\ No newline at end of file