1 files changed, 1 insertions, 1 deletions

diff --git a/src/mailman/rules/suspicious.py b/src/mailman/rules/suspicious.py
index acb17334a..679605fd6 100644
--- a/src/mailman/rules/suspicious.py
+++ b/src/mailman/rules/suspicious.py
@@ -87,7 +87,7 @@ def has_matching_bounce_header(mlist, msg):
     """
     for header, cre, line in _parse_matching_header_opt(mlist):
         for value in msg.get_all(header, []):
-            # Convert the header value to string because it may be an
+            # Convert the header value to a str because it may be an
             # email.header.Header instance.
             if cre.search(str(value)):
                 return True