diff --git a/src/plugins/view/pedigreeview.py b/src/plugins/view/pedigreeview.py
index f000a0521..229ce3912 100644
--- a/src/plugins/view/pedigreeview.py
+++ b/src/plugins/view/pedigreeview.py
@@ -34,6 +34,7 @@ from gen.ggettext import ngettext
 from cgi import escape
 import math
 import sys
+import os
 
 #-------------------------------------------------------------------------
 #