diff --git a/apps/emqx_modules/src/emqx_delayed.erl b/apps/emqx_modules/src/emqx_delayed.erl
index 36569d52e..69e9ebb5b 100644
--- a/apps/emqx_modules/src/emqx_delayed.erl
+++ b/apps/emqx_modules/src/emqx_delayed.erl
@@ -155,7 +155,7 @@ format_delayed(#delayed_message{key = {ExpectTimeStamp, Id}, delayed = Delayed,
     },
     case WithPayload of
         true ->
-            Result#{payload => base64:encode(Payload)};
+            Result#{payload => Payload};
         _ ->
             Result
     end.
diff --git a/apps/emqx_retainer/src/emqx_retainer_api.erl b/apps/emqx_retainer/src/emqx_retainer_api.erl
index b60ac5627..7739d60dc 100644
--- a/apps/emqx_retainer/src/emqx_retainer_api.erl
+++ b/apps/emqx_retainer/src/emqx_retainer_api.erl
@@ -84,7 +84,7 @@ with_topic_api() ->
             parameters => parameters(),
             responses => #{
                 <<"200">> => object_schema(message_props(), <<"List retained messages">>),
-                <<"404">> => error_schema(<<"Reatined Not Exists">>, ['NOT_FOUND']),
+                <<"404">> => error_schema(<<"Retained Not Exists">>, ['NOT_FOUND']),
                 <<"405">> => schema(<<"NotAllowed">>)
             }
         },