diff --git a/app/controllers/homework_commons_controller.rb b/app/controllers/homework_commons_controller.rb
index 6c5b4247f..d18ceae60 100644
--- a/app/controllers/homework_commons_controller.rb
+++ b/app/controllers/homework_commons_controller.rb
@@ -1210,7 +1210,7 @@ class HomeworkCommonsController < ApplicationController
 
         rescue Exception => e
           uid_logger(e.message)
-          tip_exception("删除失败")
+          tip_exception(e.message)
           raise ActiveRecord::Rollback
         end
       end
diff --git a/app/models/homework_common.rb b/app/models/homework_common.rb
index 65c2e6f21..7a19fb82c 100644
--- a/app/models/homework_common.rb
+++ b/app/models/homework_common.rb
@@ -38,7 +38,7 @@ class HomeworkCommon < ApplicationRecord
   validates :name, presence: true, length: { maximum: 60, too_long: "不能超过60个字符" }
   validates :description, length: { maximum: 15000, too_long: "不能超过15000个字符" }
   validates :explanation, length: { maximum: 5000, too_long: "不能超过5000个字符" }
-  validates :reference_answer, length: { maximum: 15000, too_long: "不能超过15000个字符" }
+  validates :reference_answer, length: { maximum: 25000, too_long: "不能超过25000个字符" }
 
   # after_update :update_activity
   before_destroy :update_homework_bank_quotes