diff options
Diffstat (limited to 'src/mailman/chains/headers.py')
| -rw-r--r-- | src/mailman/chains/headers.py | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mailman/chains/headers.py b/src/mailman/chains/headers.py index 7628c8b7c..b37079f7f 100644 --- a/src/mailman/chains/headers.py +++ b/src/mailman/chains/headers.py @@ -122,7 +122,7 @@ class HeaderMatchChain(Chain): """See `IMutableChain`.""" # Remove all dynamically created rules. Use the keys so we can mutate # the dictionary inside the loop. - for rule_name in config.rules.keys(): + for rule_name in list(config.rules): if rule_name.startswith('header-match-'): del config.rules[rule_name] self._extended_links = [] |