diff --git a/Lib/http/cookies.py b/Lib/http/cookies.py
index 2aeb8d3..ddbcbf8 100644
--- a/Lib/http/cookies.py
+++ b/Lib/http/cookies.py
@@ -439,7 +439,7 @@
     (?P<val>                       # Start of group 'val'
     "(?:[^\\"]|\\.)*"                # Any doublequoted string
     |                                # or
-    \w{3},\s[\w\d-]{9,11}\s[\d:]{8}\sGMT  # Special case for "expires" attr
+    \w{3},\s[\w\d\s-]{9,11}\s[\d:]{8}\sGMT  # Special case for "expires" attr
     |                                # or
     """ + _LegalCharsPatt + r"""*    # Any word or empty string
     )                              # End of group 'val'