diff --git a/src/ui/scanpopup.cc b/src/ui/scanpopup.cc
index cb5158f3..e916a295 100644
--- a/src/ui/scanpopup.cc
+++ b/src/ui/scanpopup.cc
@@ -22,14 +22,13 @@
 #endif
 #include "base_type.hh"
 
-/// We use different window flags under Windows and X11 due to slight differences
-/// in their behavior on those platforms.
+
 static const Qt::WindowFlags defaultUnpinnedWindowFlags =
 
 #if defined( Q_OS_WIN )
   Qt::Tool | Qt::FramelessWindowHint | Qt::WindowStaysOnTopHint
 #else
-  Qt::Popup
+  Qt::FramelessWindowHint | Qt::WindowStaysOnTopHint
 #endif
   ;