diff --git a/src/visualizer/visualizer/ipython_view.py b/src/visualizer/visualizer/ipython_view.py
index 866fd3707..eeba493e0 100644
--- a/src/visualizer/visualizer/ipython_view.py
+++ b/src/visualizer/visualizer/ipython_view.py
@@ -16,6 +16,7 @@ is available at U{http://www.opensource.org/licenses/bsd-license.php}
 
 import gi
 
+gi.require_version("Gdk", "3.0")
 gi.require_version("Gtk", "3.0")
 import os
 import re