diff --git a/td/generate/scheme/td_api.tl b/td/generate/scheme/td_api.tl
index af049e3c3..c807ce425 100644
--- a/td/generate/scheme/td_api.tl
+++ b/td/generate/scheme/td_api.tl
@@ -2573,6 +2573,9 @@ chatEventMemberPromoted user_id:int53 old_status:ChatMemberStatus new_status:Cha
 //@description A chat member was restricted/unrestricted or banned/unbanned, or the list of their restrictions has changed @member_id Affected chat member identifier @old_status Previous status of the chat member @new_status New status of the chat member
 chatEventMemberRestricted member_id:MessageSender old_status:ChatMemberStatus new_status:ChatMemberStatus = ChatEventAction;
 
+//@description The chat available reactions were changed @old_available_reactions Previous chat available reactions @new_available_reactions New chat available reactions
+chatEventAvailableReactionsChanged old_available_reactions:vector<string> new_available_reactions:vector<string> = ChatEventAction;
+
 //@description The chat description was changed @old_description Previous chat description @new_description New chat description
 chatEventDescriptionChanged old_description:string new_description:string = ChatEventAction;
 
diff --git a/td/telegram/DialogEventLog.cpp b/td/telegram/DialogEventLog.cpp
index 1ef51c619..802a92e23 100644
--- a/td/telegram/DialogEventLog.cpp
+++ b/td/telegram/DialogEventLog.cpp
@@ -340,8 +340,16 @@ static td_api::object_ptr<td_api::ChatEventAction> get_chat_event_action_object(
       auto action = move_tl_object_as<telegram_api::channelAdminLogEventActionToggleNoForwards>(action_ptr);
       return td_api::make_object<td_api::chatEventHasProtectedContentToggled>(action->new_value_);
     }
-    case telegram_api::channelAdminLogEventActionChangeAvailableReactions::ID:
-      return nullptr;
+    case telegram_api::channelAdminLogEventActionChangeAvailableReactions::ID: {
+      auto action = move_tl_object_as<telegram_api::channelAdminLogEventActionChangeAvailableReactions>(action_ptr);
+      auto old_value = td->stickers_manager_->get_active_reactions(std::move(action->prev_value_));
+      auto new_value = td->stickers_manager_->get_active_reactions(std::move(action->new_value_));
+      if (old_value == new_value) {
+        return nullptr;
+      }
+      return td_api::make_object<td_api::chatEventAvailableReactionsChanged>(std::move(old_value),
+                                                                             std::move(new_value));
+    }
     default:
       UNREACHABLE();
       return nullptr;