diff --git a/dbf/_index.py b/dbf/_index.py
index 6894106..e301f29 100755
--- a/dbf/_index.py
+++ b/dbf/_index.py
@@ -9,8 +9,8 @@ class IndexFile(object):
filename += '.pdx'
if not os.path.exists(filename):
self.index_file = open(filename, 'r+b')
- self.index_file.write('\xea\xaf\x37\xbf' # signature
- '\x00'*8 # two non-existant lists
+ self.index_file.write('\xea\xaf\x37\xbf' + # signature
+ '\x00'*8 + # two non-existant lists
'\x00'*500) # and no indices
return
index_file = self.index_file = open(filename, 'r+b')