diff --git a/diceware/wordlist.py b/diceware/wordlist.py
index 0b241153141146c5dbd0401ee5e93cf6335e0708..8c03b8c49eea6d7ef0b12a60156a526ddc3fdbed 100644
--- a/diceware/wordlist.py
+++ b/diceware/wordlist.py
@@ -145,6 +145,8 @@ class WordList(object):
 
     `path_or_filelike` is the path of the wordlist file or an already
     opened file. Opened files must be open for reading, of course.
+
+    Please note that open file descriptors are not closed after reading.
     """
     def __init__(self, path_or_filelike=None):
         self.path = None