1 files changed, 6 insertions, 0 deletions

diff --git a/src/mailman/core/errors.py b/src/mailman/core/errors.py
index 95a318ca6..42b536d46 100644
--- a/src/mailman/core/errors.py
+++ b/src/mailman/core/errors.py
@@ -90,6 +90,12 @@ def _(s):
 class HandlerError(MailmanError):
     """Base class for all handler errors."""
 
+    def __init__(self, message=None):
+        self.message = message
+
+    def __str__(self):
+        return self.message
+
 
 class HoldMessage(HandlerError):
     """Base class for all message-being-held short circuits."""