From 3cd05a34d900a3ee0844fa0075eec73f7f019644 Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Fri, 12 Feb 2021 14:47:09 +0400
Subject: [PATCH] In legacy groups admins can't remove admins.

---
 Telegram/SourceFiles/boxes/peers/edit_participants_box.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Telegram/SourceFiles/boxes/peers/edit_participants_box.cpp b/Telegram/SourceFiles/boxes/peers/edit_participants_box.cpp
index f777344c05..c74dfa173c 100644
--- a/Telegram/SourceFiles/boxes/peers/edit_participants_box.cpp
+++ b/Telegram/SourceFiles/boxes/peers/edit_participants_box.cpp
@@ -359,7 +359,9 @@ bool ParticipantsAdditionalData::canRemoveUser(
 	if (canRestrictUser(user)) {
 		return true;
 	} else if (const auto chat = _peer->asChat()) {
-		return !user->isSelf() && chat->invitedByMe.contains(user);
+		return !user->isSelf()
+			&& chat->invitedByMe.contains(user)
+			&& (chat->amCreator() || !_admins.contains(user));
 	}
 	return false;
 }