diff --git a/td/telegram/NotificationManager.cpp b/td/telegram/NotificationManager.cpp
index ed98ff4f..5500441d 100644
--- a/td/telegram/NotificationManager.cpp
+++ b/td/telegram/NotificationManager.cpp
@@ -1622,6 +1622,12 @@ void NotificationManager::edit_notification(NotificationGroupId group_id, Notifi
   for (size_t i = 0; i < group.notifications.size(); i++) {
     auto &notification = group.notifications[i];
     if (notification.notification_id == notification_id) {
+      if (notification.type->get_message_id() != type->get_message_id()) {
+        LOG(ERROR) << "Ignore edit of " << notification_id << " with " << *type << ", because previous type is "
+                   << *notification.type;
+        return;
+      }
+
       notification.type = std::move(type);
       if (i + max_notification_group_size_ >= group.notifications.size() &&
           !(get_last_updated_group_key() < group_it->first)) {
@@ -1633,6 +1639,12 @@ void NotificationManager::edit_notification(NotificationGroupId group_id, Notifi
   }
   for (auto &notification : group.pending_notifications) {
     if (notification.notification_id == notification_id) {
+      if (notification.type->get_message_id() != type->get_message_id()) {
+        LOG(ERROR) << "Ignore edit of " << notification_id << " with " << *type << ", because previous type is "
+                   << *notification.type;
+        return;
+      }
+
       notification.type = std::move(type);
       return;
     }