diff --git a/polyglot/text.py b/polyglot/text.py
index 68411a1..55241d5 100644
--- a/polyglot/text.py
+++ b/polyglot/text.py
@@ -215,7 +215,7 @@ def correct(self):
     :rtype: :class:`BaseBlob <BaseBlob>`
     """
     # regex matches: contraction or word or punctuation or whitespace
-    tokens = nltk.tokenize.regexp_tokenize(self.raw, "\w*('\w*)+|\w+|[^\w\s]|\s")
+    tokens = nltk.tokenize.regexp_tokenize(self.raw, r"\w*('\w*)+|\w+|[^\w\s]|\s")
     corrected = (Word(w).correct() for w in tokens)
     ret = ''.join(corrected)
     return self.__class__(ret)