1 files changed, 2 insertions, 4 deletions

diff --git a/src/mailman/options.py b/src/mailman/options.py
index d18c78cea..85508501a 100644
--- a/src/mailman/options.py
+++ b/src/mailman/options.py
@@ -137,10 +137,8 @@ class Options:
             from the configuration files.
         :type propagate_logs: bool or None.
         """
-        # Fall back to using the environment variable if -C is not given.
-        config_file = (os.getenv('MAILMAN_CONFIG_FILE')
-                       if self.options.config is None
-                       else self.options.config)
+        # The environment variable overrides the -C option.
+        config_file = os.getenv('MAILMAN_CONFIG_FILE', self.options.config)
         initialize(config_file, propagate_logs=propagate_logs)
         self.sanity_check()