diff --git a/telethon/events/chataction.py b/telethon/events/chataction.py
index 3ca18f5e..2927c8d0 100644
--- a/telethon/events/chataction.py
+++ b/telethon/events/chataction.py
@@ -95,7 +95,6 @@ class ChatAction(EventBuilder):
             photo (:tl:`Photo`, optional):
                 The new photo (or ``None`` if it was removed).
 
-
             user_added (`bool`):
                 ``True`` if the user was added by some other.
 
@@ -111,7 +110,7 @@ class ChatAction(EventBuilder):
             created (`bool`, optional):
                 ``True`` if this chat was just created.
 
-            new_title (`bool`, optional):
+            new_title (`str`, optional):
                 The new title string for the chat, if applicable.
 
             unpin (`bool`):
diff --git a/telethon/telegram_client.py b/telethon/telegram_client.py
index 91627ded..23af0f57 100644
--- a/telethon/telegram_client.py
+++ b/telethon/telegram_client.py
@@ -2593,7 +2593,7 @@ class TelegramClient(TelegramBareClient):
         raise ValueError(
             'Could not find the input entity for "{}". Please read https://'
             'telethon.readthedocs.io/en/latest/extra/basic/entities.html to'
-            'find out more details.'
+            ' find out more details.'
             .format(peer)
         )