diff --git a/src/borg/helpers/errors.py b/src/borg/helpers/errors.py
index 71f2022e24..7199177f7a 100644
--- a/src/borg/helpers/errors.py
+++ b/src/borg/helpers/errors.py
@@ -153,6 +153,7 @@ class BackupOSError(BackupError):
     exit_mcode = 104
 
     def __init__(self, op, os_error):
+        super().__init__(op, os_error)
         self.op = op
         self.os_error = os_error
         self.errno = os_error.errno