diff --git a/app/helpers/projects_helper.rb b/app/helpers/projects_helper.rb
index eb5d95637..e19fb972c 100644
--- a/app/helpers/projects_helper.rb
+++ b/app/helpers/projects_helper.rb
@@ -117,7 +117,7 @@ module ProjectsHelper
     data = { userId: user.id, ref: project.identifier, owner: project.owner.login, timestamp: Time.now.to_i * 1000 }
     uid = EduSetting.get("jianmu_oauth2_uid") || 'oedKx4v-WyAfu2oy_AsFpFQCH_-g91ms0PQKN7YcEuw'
     app = Doorkeeper::Application.find_by(uid: uid)
-    key = app&.secret || 'bf3c199c2470cb477d907b1e0917c17b'
+    key =  'bf3c199c2470cb477d907b1e0917c17b'
     aes_encrypt(key, data.to_json)
   end