diff --git a/walrus/autocomplete.py b/walrus/autocomplete.py
index 9732b84..4dba1cc 100644
--- a/walrus/autocomplete.py
+++ b/walrus/autocomplete.py
@@ -57,7 +57,7 @@ def _load_stopwords(self):
     def tokenize_title(self, phrase, stopwords=True):
         if isinstance(phrase, bytes):
             phrase = decode(phrase)
-        phrase = re.sub('[^a-z0-9_\-\s]', '', phrase.lower())
+        phrase = re.sub(r'[^a-z0-9_\-\s]', '', phrase.lower())
         if stopwords and self._stopwords:
             return [w for w in phrase.split() if w not in self._stopwords]
         else:
diff --git a/walrus/search/__init__.py b/walrus/search/__init__.py
index f565cc1..9484154 100644
--- a/walrus/search/__init__.py
+++ b/walrus/search/__init__.py
@@ -13,7 +13,7 @@ def __init__(self, stemmer=True, metaphone=False,
         self._use_metaphone = metaphone
         self._min_word_length = min_word_length
         self._symbols_re = re.compile(
-            '[\.,;:"\'\\/!@#\$%\?\*\(\)\-=+\[\]\{\}_]')
+            r'[\.,;:"\'\\/!@#\$%\?\*\(\)\-=+\[\]\{\}_]')
 
         self._stopwords = self._load_stopwords(stopwords_file)