1 files changed, 11 insertions, 0 deletions
diff --git a/src/mailman/interfaces/configuration.py b/src/mailman/interfaces/configuration.py
index 8c4fb52a6..901706f91 100644
--- a/src/mailman/interfaces/configuration.py
+++ b/src/mailman/interfaces/configuration.py
@@ -23,11 +23,22 @@ __metaclass__ = type
 __all__ = [
     'ConfigurationUpdatedEvent',
     'IConfiguration',
+    'MissingConfigurationFileError',
     ]
 
 
 from zope.interface import Interface
 
+from mailman.core.errors import MailmanError
+
+
+
+class MissingConfigurationFileError(MailmanError):
+    """A named configuration file was not found."""
+
+    def __init__(self, path):
+        self.path = path
+
 
 
 class IConfiguration(Interface):