diff --git a/openlp/plugins/songs/lib/mediaitem.py b/openlp/plugins/songs/lib/mediaitem.py
index 3d9a9ef76..65e2289cd 100644
--- a/openlp/plugins/songs/lib/mediaitem.py
+++ b/openlp/plugins/songs/lib/mediaitem.py
@@ -27,6 +27,7 @@
 
 import logging
 import locale
+import re
 
 from PyQt4 import QtCore, QtGui
 from sqlalchemy.sql import or_
diff --git a/openlp/plugins/songs/lib/xml.py b/openlp/plugins/songs/lib/xml.py
index 7bcf56aa1..f5ec28103 100644
--- a/openlp/plugins/songs/lib/xml.py
+++ b/openlp/plugins/songs/lib/xml.py
@@ -514,7 +514,7 @@ class OpenLyrics(object):
         ``song``
             The song object.
         """
-        song.song_book_id = 0
+        song.song_book_id = None
         song.song_number = u''
         if hasattr(properties, u'songbooks'):
             for songbook in properties.songbooks.songbook: