diff --git a/dedrm_src/epubtest.py b/dedrm_src/epubtest.py
index 11f1427..eb9af5a 100644
--- a/dedrm_src/epubtest.py
+++ b/dedrm_src/epubtest.py
@@ -48,7 +48,7 @@ from __future__ import with_statement
 
 __version__ = '1.01'
 
-import sys, struct, os
+import sys, struct, os, traceback
 import zlib
 import zipfile
 import xml.etree.ElementTree as etree