diff --git a/nltk/util.py b/nltk/util.py
index 2af0fb05d7..d04544b8e4 100644
--- a/nltk/util.py
+++ b/nltk/util.py
@@ -1332,8 +1332,9 @@ def as_dict(self, d=None):
 
         >>> from nltk.util import Trie
         >>> trie = Trie(["abc", "def"])
-        >>> trie.as_dict()
-        {'a': {'b': {'c': {True: None}}}, 'd': {'e': {'f': {True: None}}}}
+        >>> expected = {'a': {'b': {'c': {True: None}}}, 'd': {'e': {'f': {True: None}}}}
+        >>> trie.as_dict() == expected
+        True
 
         """
         def _default_to_regular(d):