diff --git a/pyfpdb/GuiGraphViewer.py b/pyfpdb/GuiGraphViewer.py
index f91c9870..d148d841 100644
--- a/pyfpdb/GuiGraphViewer.py
+++ b/pyfpdb/GuiGraphViewer.py
@@ -20,6 +20,7 @@ import pygtk
 pygtk.require('2.0')
 import gtk
 import os
+import sys
 import traceback
 from time import *
 #import pokereval