diff --git a/applications/common/utils/validate.py b/applications/common/utils/validate.py
index e5d045d..05b8011 100644
--- a/applications/common/utils/validate.py
+++ b/applications/common/utils/validate.py
@@ -2,7 +2,7 @@
 from flask import abort, make_response, jsonify, escape
 
 
-def str_escape(s: str) -> str:
+def str_escape(s):
     if not s:
         return None
     return str(escape(s))