diff --git a/src/calibre/ebooks/metadata/pml.py b/src/calibre/ebooks/metadata/pml.py
index dff791cb0b..499cf75d2c 100644
--- a/src/calibre/ebooks/metadata/pml.py
+++ b/src/calibre/ebooks/metadata/pml.py
@@ -1,9 +1,13 @@
-'''Read meta information from TXT files'''
-
-from __future__ import with_statement
+# -*- coding: utf-8 -*-
 
 __license__   = 'GPL v3'
 __copyright__ = '2009, John Schember <john@nachtimwald.com>'
+__docformat__ = 'restructuredtext en'
+
+'''
+Read meta information from TXT files
+'''
+
 
 import os
 import glob
@@ -57,20 +61,15 @@ def get_metadata(stream, extract_cover=True):
     return mi
 
 def get_cover(name, tdir, top_level=False):
-    cover_path = []
+    cover_path = ''
     cover_data = None
 
     if top_level:
-        cover_path = glob.glob(os.path.join(tdir, 'cover.png'))
-    # Images not in top level try bookname_img directory because
-    # that's where Dropbook likes to see them.
+        cover_path = os.path.join(tdir, 'cover.png') if os.path.exists(os.path.join(tdir, 'cover.png')) else ''
     if not cover_path:
-        cover_path = glob.glob(os.path.join(tdir, name + '_img', 'cover.png'))
-    # No images in Dropbook location try generic images directory
-    if not cover_path:
-        cover_path = glob.glob(os.path.join(os.path.join(tdir, 'images'), 'cover.png'))
+        cover_path = os.path.join(tdir, name + '_img', 'cover.png') if os.path.exists(os.path.join(tdir, name + '_img', 'cover.png')) else os.path.join(os.path.join(tdir, 'images'), 'cover.png') if os.path.exists(os.path.join(os.path.join(tdir, 'images'), 'cover.png')) else ''
     if cover_path:
-        with open(cover_path[0], 'r+b') as cstream:
+        with open(cover_path, 'r+b') as cstream:
             cover_data = cstream.read()
 
     return ('png', cover_data)