From 41f6003b092570064a71ff802e16f68bc0611cfd Mon Sep 17 00:00:00 2001
From: levlam <levlam@telegram.org>
Date: Sun, 31 Jan 2021 20:43:57 +0300
Subject: [PATCH] Fix supergroupMembersFilterMention with non-zero thread.

---
 td/telegram/DialogParticipant.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/td/telegram/DialogParticipant.cpp b/td/telegram/DialogParticipant.cpp
index d4700b0d2..65ff4c06a 100644
--- a/td/telegram/DialogParticipant.cpp
+++ b/td/telegram/DialogParticipant.cpp
@@ -733,7 +733,7 @@ ChannelParticipantsFilter::get_input_channel_participants_filter() const {
       if (!query.empty()) {
         flags |= telegram_api::channelParticipantsMentions::Q_MASK;
       }
-      if (!top_thread_message_id.is_valid()) {
+      if (top_thread_message_id.is_valid()) {
         flags |= telegram_api::channelParticipantsMentions::TOP_MSG_ID_MASK;
       }
       return make_tl_object<telegram_api::channelParticipantsMentions>(