diff --git a/Telegram/SourceFiles/boxes/confirm_box.cpp b/Telegram/SourceFiles/boxes/confirm_box.cpp
index c4b712ca9..0fe8a85b1 100644
--- a/Telegram/SourceFiles/boxes/confirm_box.cpp
+++ b/Telegram/SourceFiles/boxes/confirm_box.cpp
@@ -449,9 +449,8 @@ void ConvertToSupergroupBox::prepare() {
 
 	_text.create(this, rpl::single(std::move(details)), st::boxLabel);
 	
-	_textWidth = st::boxWideWidth - st::boxPadding.left() - st::boxButtonPadding.right();
-	_textHeight = _text->countHeight(_textWidth);
-	setDimensions(st::boxWideWidth, _textHeight + st::boxPadding.bottom());
+	const auto fullHeight = st::boxPadding.top() + _text->height() + st::boxPadding.bottom();
+	setDimensions(st::boxWideWidth, fullHeight);
 }
 
 void ConvertToSupergroupBox::convertToSupergroup() {
diff --git a/Telegram/SourceFiles/boxes/confirm_box.h b/Telegram/SourceFiles/boxes/confirm_box.h
index ee42a8b7d..406b76bb6 100644
--- a/Telegram/SourceFiles/boxes/confirm_box.h
+++ b/Telegram/SourceFiles/boxes/confirm_box.h
@@ -141,7 +141,6 @@ private:
 
 	not_null<ChatData*> _chat;
 	object_ptr<Ui::FlatLabel> _text = { nullptr };
-	int32 _textWidth, _textHeight;
 };
 
 class PinMessageBox : public Ui::BoxContent, public RPCSender {