diff --git a/readthedocs/concepts/full-api.rst b/readthedocs/concepts/full-api.rst
index f0084a13..cce026f1 100644
--- a/readthedocs/concepts/full-api.rst
+++ b/readthedocs/concepts/full-api.rst
@@ -26,15 +26,6 @@ of everything you can do.
     can also do ``from telethon.tl import types, functions``. Both work.
 
 
-.. important::
-
-    All the examples in this documentation assume that you have
-    ``from telethon import sync`` or ``import telethon.sync`` for the
-    sake of simplicity and that you understand what it does (see
-    :ref:`compatibility-and-convenience` for more). Simply add
-    either line at the beginning of your project and it will work.
-
-
 You should also refer to the documentation to see what the objects
 (constructors) Telegram returns look like. Every constructor inherits
 from a common type, and that's the reason for this distinction.
diff --git a/telethon_generator/data/errors.csv b/telethon_generator/data/errors.csv
index f898bf6d..b2e55504 100644
--- a/telethon_generator/data/errors.csv
+++ b/telethon_generator/data/errors.csv
@@ -155,7 +155,7 @@ INLINE_RESULT_EXPIRED,400,The inline query expired
 INPUT_CONSTRUCTOR_INVALID,400,The provided constructor is invalid
 INPUT_FETCH_ERROR,400,An error occurred while deserializing TL parameters
 INPUT_FETCH_FAIL,400,Failed deserializing TL payload
-INPUT_FILTER_INVALID,400,The search query filter is valid
+INPUT_FILTER_INVALID,400,The search query filter is invalid
 INPUT_LAYER_INVALID,400,The provided layer is invalid
 INPUT_METHOD_INVALID,400,The invoked method does not exist anymore or has never existed
 INPUT_REQUEST_TOO_LONG,400,The input request was too long. This may be a bug in the library as it can occur when serializing more bytes than it should (like appending the vector constructor code at the end of a message)