diff --git a/apps/authentication/models/access_key.py b/apps/authentication/models/access_key.py
index 51e5b8849..725bc9758 100644
--- a/apps/authentication/models/access_key.py
+++ b/apps/authentication/models/access_key.py
@@ -9,7 +9,7 @@ from common.utils.random import random_string
 
 
 def default_secret():
-    return random_string(36)
+    return random_string(32)
 
 
 def defatult_ip_group():