diff --git a/venus/api/common.py b/venus/api/common.py
index 17253bc..c33256d 100644
--- a/venus/api/common.py
+++ b/venus/api/common.py
@@ -206,7 +206,7 @@ def get_request_url(request):
     forwarded = headers.get('X-Forwarded-Host')
     if forwarded:
         url_parts = list(parse.urlsplit(url))
-        url_parts[1] = re.split(',\s?', forwarded)[-1]
+        url_parts[1] = re.split(',\\s?', forwarded)[-1]
         url = parse.urlunsplit(url_parts).rstrip('/')
     return url
 
diff --git a/venus/utils.py b/venus/utils.py
index 60a9e9c..67d2126 100644
--- a/venus/utils.py
+++ b/venus/utils.py
@@ -391,7 +391,7 @@ def sanitize_hostname(hostname):
     hostname = hostname.decode('latin-1')
 
     hostname = re.sub('[ _]', '-', hostname)
-    hostname = re.sub('[^\w.-]+', '', hostname)
+    hostname = re.sub('[^\\w.-]+', '', hostname)
     hostname = hostname.lower()
     hostname = hostname.strip('.-')