diff --git a/ui/platform/ui_platform_window.cpp b/ui/platform/ui_platform_window.cpp
index b45cdf4..3933dd6 100644
--- a/ui/platform/ui_platform_window.cpp
+++ b/ui/platform/ui_platform_window.cpp
@@ -16,6 +16,7 @@ namespace Platform {
 
 BasicWindowHelper::BasicWindowHelper(not_null<RpWidget*> window)
 : _window(window) {
+	_window->setWindowFlag(Qt::Window);
 }
 
 not_null<RpWidget*> BasicWindowHelper::body() {