diff --git a/openlp/core/ui/slidecontroller.py b/openlp/core/ui/slidecontroller.py
index 04bb931d0..316243b91 100644
--- a/openlp/core/ui/slidecontroller.py
+++ b/openlp/core/ui/slidecontroller.py
@@ -25,6 +25,7 @@
 # Temple Place, Suite 330, Boston, MA 02111-1307 USA                          #
 ###############################################################################
 
+import os
 import logging
 import time
 import copy