diff --git a/src/calibre/ebooks/metadata/sources/test.py b/src/calibre/ebooks/metadata/sources/test.py
index e280b0c038..c55f963003 100644
--- a/src/calibre/ebooks/metadata/sources/test.py
+++ b/src/calibre/ebooks/metadata/sources/test.py
@@ -67,6 +67,23 @@ def authors_test(authors):
 
     return test
 
+def series_test(series, series_index):
+    series = series.lower()
+
+    def test(mi):
+        ms = mi.series.lower() if mi.series else ''
+        if (ms == series) and (series_index == mi.series_index):
+            return True
+        if mi.series:
+            prints('Series test failed. Expected: \'%s [%d]\' found \'%s[%d]\''% \
+                        (series, series_index, ms, mi.series_index))
+        else:
+            prints('Series test failed. Expected: \'%s [%d]\' found no series'% \
+                        (series, series_index))
+        return False
+
+    return test
+
 def init_test(tdir_name):
     tdir = tempfile.gettempdir()
     lf = os.path.join(tdir, tdir_name.replace(' ', '')+'_identify_test.txt')
diff --git a/src/calibre/gui2/dialogs/tweak_epub.py b/src/calibre/gui2/dialogs/tweak_epub.py
index a42fb07e40..edc274c9b2 100755
--- a/src/calibre/gui2/dialogs/tweak_epub.py
+++ b/src/calibre/gui2/dialogs/tweak_epub.py
@@ -12,7 +12,7 @@ from zipfile import ZipFile, ZIP_DEFLATED, ZIP_STORED
 
 from PyQt4.Qt import QDialog
 
-from calibre.constants import isosx, iswindows
+from calibre.constants import isosx
 from calibre.gui2 import open_local_file
 from calibre.gui2.dialogs.tweak_epub_ui import Ui_Dialog
 from calibre.libunzip import extract as zipextract