diff --git a/scrapy/contrib/httpcache.py b/scrapy/contrib/httpcache.py
index be5af1604..d952f43e8 100644
--- a/scrapy/contrib/httpcache.py
+++ b/scrapy/contrib/httpcache.py
@@ -288,9 +288,9 @@ def parse_cachecontrol(header):
 
     http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.9
 
-    >>> cachecontrol_directives('public, max-age=3600')
+    >>> parse_cachecontrol('public, max-age=3600')
     {'public': None, 'max-age': '3600'}
-    >>> cachecontrol_directives('')
+    >>> parse_cachecontrol('')
     {}
 
     """
diff --git a/scrapy/http/cookies.py b/scrapy/http/cookies.py
index a3846dadb..8ad8de290 100644
--- a/scrapy/http/cookies.py
+++ b/scrapy/http/cookies.py
@@ -80,7 +80,7 @@ def potential_domain_matches(domain):
     """Potential domain matches for a cookie
 
     >>> potential_domain_matches('www.example.com')
-    ['www.example.com', 'example.com']
+    ['www.example.com', 'example.com', '.www.example.com', '.example.com']
 
     """
     matches = [domain]