diff --git a/src/gui/plug/_windows.py b/src/gui/plug/_windows.py
index 71a43ee77..6a3ed2750 100644
--- a/src/gui/plug/_windows.py
+++ b/src/gui/plug/_windows.py
@@ -38,6 +38,7 @@ import sys
 #
 #-------------------------------------------------------------------------
 from gi.repository import Gtk
+from gi.repository import Gdk
 from gi.repository import Pango
 from gi.repository import GObject