diff --git a/Telegram/SourceFiles/history/history_inner_widget.h b/Telegram/SourceFiles/history/history_inner_widget.h
index 0ed6d9bceb..3649179629 100644
--- a/Telegram/SourceFiles/history/history_inner_widget.h
+++ b/Telegram/SourceFiles/history/history_inner_widget.h
@@ -72,9 +72,6 @@ class HistoryWidget;
 class HistoryInner
 	: public Ui::RpWidget
 	, public Ui::AbstractTooltipShower {
-	// The Q_OBJECT meta info is used for qobject_cast!
-	Q_OBJECT
-
 public:
 	using Element = HistoryView::Element;
 
diff --git a/Telegram/SourceFiles/platform/linux/main_window_linux.cpp b/Telegram/SourceFiles/platform/linux/main_window_linux.cpp
index efaf0a792b..5e05896f8d 100644
--- a/Telegram/SourceFiles/platform/linux/main_window_linux.cpp
+++ b/Telegram/SourceFiles/platform/linux/main_window_linux.cpp
@@ -351,7 +351,7 @@ void SendKeySequence(
 	const auto focused = QApplication::focusWidget();
 	if (qobject_cast<QLineEdit*>(focused)
 		|| qobject_cast<QTextEdit*>(focused)
-		|| qobject_cast<HistoryInner*>(focused)) {
+		|| dynamic_cast<HistoryInner*>(focused)) {
 		QApplication::postEvent(
 			focused,
 			new QKeyEvent(QEvent::KeyPress, key, modifiers));
@@ -826,12 +826,12 @@ void MainWindow::updateGlobalMenuHook() {
 		canRedo = edit->document()->isRedoAvailable();
 		canPaste = clipboardHasText;
 		if (canCopy) {
-			if (const auto inputField = qobject_cast<Ui::InputField*>(
+			if (const auto inputField = dynamic_cast<Ui::InputField*>(
 				focused->parentWidget())) {
 				markdownEnabled = inputField->isMarkdownEnabled();
 			}
 		}
-	} else if (const auto list = qobject_cast<HistoryInner*>(focused)) {
+	} else if (const auto list = dynamic_cast<HistoryInner*>(focused)) {
 		canCopy = list->canCopySelected();
 		canDelete = list->canDeleteSelected();
 	}
diff --git a/Telegram/SourceFiles/platform/mac/main_window_mac.mm b/Telegram/SourceFiles/platform/mac/main_window_mac.mm
index 9621b83e72..4c4cdb6cf8 100644
--- a/Telegram/SourceFiles/platform/mac/main_window_mac.mm
+++ b/Telegram/SourceFiles/platform/mac/main_window_mac.mm
@@ -144,7 +144,7 @@ namespace {
 
 void SendKeySequence(Qt::Key key, Qt::KeyboardModifiers modifiers = Qt::NoModifier) {
 	const auto focused = QApplication::focusWidget();
-	if (qobject_cast<QLineEdit*>(focused) || qobject_cast<QTextEdit*>(focused) || qobject_cast<HistoryInner*>(focused)) {
+	if (qobject_cast<QLineEdit*>(focused) || qobject_cast<QTextEdit*>(focused) || dynamic_cast<HistoryInner*>(focused)) {
 		QApplication::postEvent(focused, new QKeyEvent(QEvent::KeyPress, key, modifiers));
 		QApplication::postEvent(focused, new QKeyEvent(QEvent::KeyRelease, key, modifiers));
 	}
@@ -628,12 +628,12 @@ void MainWindow::updateGlobalMenuHook() {
 		canRedo = edit->document()->isRedoAvailable();
 		canPaste = clipboardHasText;
 		if (canCopy) {
-			if (const auto inputField = qobject_cast<Ui::InputField*>(
+			if (const auto inputField = dynamic_cast<Ui::InputField*>(
 					focused->parentWidget())) {
 				canApplyMarkdown = inputField->isMarkdownEnabled();
 			}
 		}
-	} else if (auto list = qobject_cast<HistoryInner*>(focused)) {
+	} else if (auto list = dynamic_cast<HistoryInner*>(focused)) {
 		canCopy = list->canCopySelected();
 		canDelete = list->canDeleteSelected();
 	}
@@ -669,7 +669,7 @@ void MainWindow::updateGlobalMenuHook() {
 bool MainWindow::eventFilter(QObject *obj, QEvent *evt) {
 	QEvent::Type t = evt->type();
 	if (t == QEvent::FocusIn || t == QEvent::FocusOut) {
-		if (qobject_cast<QLineEdit*>(obj) || qobject_cast<QTextEdit*>(obj) || qobject_cast<HistoryInner*>(obj)) {
+		if (qobject_cast<QLineEdit*>(obj) || qobject_cast<QTextEdit*>(obj) || dynamic_cast<HistoryInner*>(obj)) {
 			updateGlobalMenu();
 		}
 	}