diff --git a/td/telegram/ContactsManager.cpp b/td/telegram/ContactsManager.cpp
index 976f337a7..0db636b4f 100644
--- a/td/telegram/ContactsManager.cpp
+++ b/td/telegram/ContactsManager.cpp
@@ -7471,7 +7471,9 @@ void ContactsManager::on_get_chat_participants(tl_object_ptr<telegram_api::ChatP
         return;
       }
 
-      invalidate_chat_full(chat_id);
+      if (from_update) {
+        invalidate_chat_full(chat_id);
+      }
       break;
     }
     case telegram_api::chatParticipants::ID: {