diff --git a/res/gstplayer b/res/gstplayer
index d20d53f..c777366 100755
--- a/res/gstplayer
+++ b/res/gstplayer
@@ -7,6 +7,7 @@ import argparse
 gi.require_version('Gst', '1.0')
 gi.require_version('Gtk', '3.0')
 gi.require_version('GstVideo', '1.0')
+gi.require_version('GdkX11', '3.0')
 
 from gi.repository import GObject, Gst, Gtk, Gdk, GLib