diff --git a/scanpopup.cc b/scanpopup.cc
index 84b1e2a8..8e1f2d6d 100644
--- a/scanpopup.cc
+++ b/scanpopup.cc
@@ -26,7 +26,7 @@ using std::wstring;
 /// in their behavior on those platforms.
 static Qt::WindowFlags popupWindowFlags =
 
-#if defined (Q_OS_WIN) || defined (Q_OS_MAC)
+#if defined (Q_OS_WIN) || ( defined (Q_OS_MAC) && QT_VERSION < QT_VERSION_CHECK( 5, 3, 0 ) )
 Qt::Tool | Qt::FramelessWindowHint | Qt::WindowStaysOnTopHint
 #else
 Qt::Popup