diff --git a/src/plugins/tool/leak.py b/src/plugins/tool/leak.py
index d20e9124d..5d13c5b09 100644
--- a/src/plugins/tool/leak.py
+++ b/src/plugins/tool/leak.py
@@ -44,6 +44,7 @@ else:
 #
 #------------------------------------------------------------------------
 from gi.repository import Gtk
+from gi.repository import Gdk
 from gi.repository import Pango
 import gc