diff --git a/td/generate/scheme/td_api.tl b/td/generate/scheme/td_api.tl
index 35fc49027..ea632b58f 100644
--- a/td/generate/scheme/td_api.tl
+++ b/td/generate/scheme/td_api.tl
@@ -1944,8 +1944,9 @@ notificationTypeNewSecretChat = NotificationType;
 //@description New call was received @call_id Call identifier
 notificationTypeNewCall call_id:int32 = NotificationType;
 
-//@description New message was received through a push notification @message_id The message identifier @sender_user_id Sender of the message. Corresponding user may be inaccessible
-//@content_type Notification content type @argument Optional argument for the notification content type
+//@description New message was received through a push notification @message_id The message identifier. The message will not be available in the chat history
+//@sender_user_id Sender of the message. Corresponding user may be inaccessible
+//@content_type Notification content type. See https://core.telegram.org/tdlib/notification-api for the list of available content types @argument Optional argument for the notification content type
 notificationTypeNewPushMessage message_id:int53 sender_user_id:int32 content_type:string argument:string = NotificationType;
 
 
diff --git a/td/telegram/MessagesManager.cpp b/td/telegram/MessagesManager.cpp
index 303640cf6..8b0340cef 100644
--- a/td/telegram/MessagesManager.cpp
+++ b/td/telegram/MessagesManager.cpp
@@ -10253,6 +10253,7 @@ void MessagesManager::try_restore_dialog_reply_markup(Dialog *d, const Message *
 }
 
 void MessagesManager::set_dialog_pinned_message_notification(Dialog *d, MessageId message_id) {
+  CHECK(d != nullptr);
   auto old_message_id = d->pinned_message_notification_message_id;
   if (old_message_id == message_id) {
     return;
diff --git a/td/telegram/NotificationManager.cpp b/td/telegram/NotificationManager.cpp
index bb6ab3506..c722e4a61 100644
--- a/td/telegram/NotificationManager.cpp
+++ b/td/telegram/NotificationManager.cpp
@@ -2564,7 +2564,7 @@ void NotificationManager::process_push_notification(string payload, Promise<Unit
 
 string NotificationManager::convert_loc_key(const string &loc_key) {
   if (loc_key == "MESSAGES") {
-    return loc_key;
+    return "MESSAGES";
   }
   switch (loc_key[8]) {
     case 'A':