diff --git a/td/generate/scheme/td_api.tl b/td/generate/scheme/td_api.tl
index cf814babf..ea05f3a86 100644
--- a/td/generate/scheme/td_api.tl
+++ b/td/generate/scheme/td_api.tl
@@ -1708,7 +1708,7 @@ messagePinMessage message_id:int53 = MessageContent;
 //@description A screenshot of a message in the chat has been taken
 messageScreenshotTaken = MessageContent;
 
-//@description The TTL (Time To Live) setting messages in a secret chat has been changed @ttl New TTL
+//@description The TTL (Time To Live) setting for messages in the chat has been changed @ttl New message TTL setting
 messageChatSetTtl ttl:int32 = MessageContent;
 
 //@description A non-standard action has happened in the chat @text Message text to be shown in the chat
diff --git a/td/telegram/MessageContent.cpp b/td/telegram/MessageContent.cpp
index f01027987..49fbf5655 100644
--- a/td/telegram/MessageContent.cpp
+++ b/td/telegram/MessageContent.cpp
@@ -4525,6 +4525,10 @@ unique_ptr<MessageContent> get_action_message_content(Td *td, tl_object_ptr<tele
       auto duration =
           (phone_call->flags_ & telegram_api::messageActionPhoneCall::DURATION_MASK) != 0 ? phone_call->duration_ : 0;
       auto is_video = (phone_call->flags_ & telegram_api::messageActionPhoneCall::VIDEO_MASK) != 0;
+      if (duration < 0) {
+        LOG(ERROR) << "Receive invalid " << oneline(to_string(phone_call));
+        break;
+      }
       return make_unique<MessageCall>(phone_call->call_id_, duration, get_call_discard_reason(phone_call->reason_),
                                       is_video);
     }
@@ -4622,6 +4626,14 @@ unique_ptr<MessageContent> get_action_message_content(Td *td, tl_object_ptr<tele
       return td::make_unique<MessageInviteToGroupCall>(InputGroupCallId(invite_to_group_call->call_),
                                                        std::move(user_ids));
     }
+    case telegram_api::messageActionSetMessagesTTL::ID: {
+      auto set_messages_ttl = move_tl_object_as<telegram_api::messageActionSetMessagesTTL>(action);
+      if (set_messages_ttl->period_ < 0) {
+        LOG(ERROR) << "Receive wrong ttl = " << set_messages_ttl->period_;
+        break;
+      }
+      return td::make_unique<MessageChatSetTtl>(set_messages_ttl->period_);
+    }
     default:
       UNREACHABLE();
   }
diff --git a/td/telegram/UpdatesManager.cpp b/td/telegram/UpdatesManager.cpp
index f8fc56630..c3b0382a7 100644
--- a/td/telegram/UpdatesManager.cpp
+++ b/td/telegram/UpdatesManager.cpp
@@ -608,6 +608,7 @@ bool UpdatesManager::is_acceptable_message(const telegram_api::Message *message_
         case telegram_api::messageActionSecureValuesSentMe::ID:
         case telegram_api::messageActionContactSignUp::ID:
         case telegram_api::messageActionGroupCall::ID:
+        case telegram_api::messageActionSetMessagesTTL::ID:
           break;
         case telegram_api::messageActionChatCreate::ID: {
           auto chat_create = static_cast<const telegram_api::messageActionChatCreate *>(action);