diff --git a/telethon_generator/parsers/errors.py b/telethon_generator/parsers/errors.py
index 45ad27c7..df352999 100644
--- a/telethon_generator/parsers/errors.py
+++ b/telethon_generator/parsers/errors.py
@@ -29,7 +29,7 @@ def _get_class_name(error_code):
 
     return snake_to_camel_case(
         error_code.replace('FIRSTNAME', 'FIRST_NAME')\
-        .replace('SLOWMODE', 'SLOW_MODE').lower(), suffix='Error')
+                  .replace('SLOWMODE', 'SLOW_MODE').lower(), suffix='Error')
 
 
 class Error: