diff --git a/Telegram/SourceFiles/calls/group/calls_group_panel.cpp b/Telegram/SourceFiles/calls/group/calls_group_panel.cpp
index 0181b161b..f0248ed7d 100644
--- a/Telegram/SourceFiles/calls/group/calls_group_panel.cpp
+++ b/Telegram/SourceFiles/calls/group/calls_group_panel.cpp
@@ -1398,6 +1398,7 @@ void Panel::initGeometry() {
 	const auto center = Core::App().getPointForCallPanelCenter();
 	const auto rect = QRect(0, 0, st::groupCallWidth, st::groupCallHeight);
 	window()->setGeometry(rect.translated(center - rect.center()));
+	window()->setMinimumSize(rect.size());
 	window()->show();
 }
 
diff --git a/Telegram/SourceFiles/window/main_window.cpp b/Telegram/SourceFiles/window/main_window.cpp
index 54f6db54c..b55994411 100644
--- a/Telegram/SourceFiles/window/main_window.cpp
+++ b/Telegram/SourceFiles/window/main_window.cpp
@@ -615,6 +615,8 @@ void MainWindow::refreshTitleWidget() {
 }
 
 void MainWindow::updateMinimumSize() {
+	setMinimumWidth(computeMinWidth());
+	setMinimumHeight(computeMinHeight());
 }
 
 void MainWindow::recountGeometryConstraints() {
@@ -967,11 +969,17 @@ void MainWindow::showRightColumn(object_ptr<TWidget> widget) {
 	const auto wasMinimumWidth = minimumWidth();
 	const auto nowMinimumWidth = computeMinWidth();
 	const auto firstResize = (nowMinimumWidth < wasMinimumWidth);
+	if (firstResize) {
+		setMinimumWidth(nowMinimumWidth);
+	}
 	if (!isMaximized()) {
 		tryToExtendWidthBy(wasWidth + nowRightWidth - wasRightWidth - width());
 	} else {
 		updateControlsGeometry();
 	}
+	if (!firstResize) {
+		setMinimumWidth(nowMinimumWidth);
+	}
 }
 
 int MainWindow::maximalExtendBy() const {