diff --git a/Lib/test/output/test_cookie b/Lib/test/output/test_cookie
index c04bfee3a9b..64b9d044c7a 100644
--- a/Lib/test/output/test_cookie
+++ b/Lib/test/output/test_cookie
@@ -29,3 +29,4 @@ Set-Cookie: Customer="WILE_E_COYOTE"; Path=/acme;
         // end hiding -->
         </script>
         
+If anything blows up after this line, it's from Cookie's doctest.
diff --git a/Lib/test/test_cookie.py b/Lib/test/test_cookie.py
index df592f31fd9..2063dbfe54b 100644
--- a/Lib/test/test_cookie.py
+++ b/Lib/test/test_cookie.py
@@ -3,6 +3,7 @@
 from test_support import verify
 import Cookie
 from test_support import verify, verbose
+import doctest
 
 # Currently this only tests SimpleCookie
 
@@ -41,3 +42,6 @@
 verify(C['Customer'].value == 'WILE_E_COYOTE')
 verify(C['Customer']['version'] == '1')
 verify(C['Customer']['path'] == '/acme')
+
+print "If anything blows up after this line, it's from Cookie's doctest."
+doctest.testmod(Cookie)