Correct error message for concurrent delete exceptions, fixes #586

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/sqlalchemy/orm/mapper.py b/lib/sqlalchemy/orm/mapper.py
index 37efdeb1f..bd5e07b14 100644
--- a/lib/sqlalchemy/orm/mapper.py
+++ b/lib/sqlalchemy/orm/mapper.py
@@ -1317,7 +1317,7 @@ class Mapper(object):
                 statement = table.delete(clause)
                 c = connection.execute(statement, delete)
                 if c.supports_sane_rowcount() and c.rowcount != len(delete):
-                    raise exceptions.ConcurrentModificationError("Updated rowcount %d does not match number of objects updated %d" % (c.cursor.rowcount, len(delete)))
+                    raise exceptions.ConcurrentModificationError("Updated rowcount %d does not match number of objects updated %d" % (c.rowcount, len(delete)))
 
         for obj in deleted_objects:
             for mapper in object_mapper(obj).iterate_to_root():